Can no longer map a network drive

I have a homegroup with 4 PC's in it.. All are running Windows 7. I backup my main PC's to the others. 3 days ago my backup to a netbook failed. It has been running happily since I got the netbook. Windows explorer couldn't view the netbook folders, but it was visible in the Network map. I disconnected the drive and tried to re-map it, but it says it can't be accessed..? I have re-started the netbook, but no joy.. Have run all the troubleshooters and they say there are no problems.

What's going on? Nothing has changed that I am aware of..? All network settings were fine before..

Dave
Dave_B_CAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Chris BRetiredCommented:
Check your update history. Rollback any security updates. Any better?

Chris B
naykamCommented:
The drives leave a reference in the registry.
Open registry: "regedit" from the run window

then browse to: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\

and delete the reference keys.

alternatively try and map the drives to a different (previously unused) letter
TripyreCommented:
verify that the permissions and accounts are correct.  Check the share and confirm the permissions on it. There is security/permissions on the Share and NTFS permissions.
HTML5 and CSS3 Fundamentals

Build a website from the ground up by first learning the fundamentals of HTML5 and CSS3, the two popular programming languages used to present content online. HTML deals with fonts, colors, graphics, and hyperlinks, while CSS describes how HTML elements are to be displayed.

Twisted_LogicCommented:
Can you ping the netbook?  
Dave_B_CAuthor Commented:
The netbook is quite new.. There is only one system restore point and that was yesterday.. As the problem was present before that the restore option is out..?

Mapping to a different drive letter gives same error

I can ping the IP address (192.168.0.5) but not the computer name (NETBOOK)

There has been no changes to the sharing or permissions from when all was fine..
Dave_B_CAuthor Commented:
I notice that it is in a different Workgroup, (WORKGROUP), presumably the Windows 7 default, as opposed to the one I set up, but it has always been like that..?
Twisted_LogicCommented:
Can you go to the UNC path \\192.168.0.5 and see anything?
Dave_B_CAuthor Commented:
How do I do that..?
Twisted_LogicCommented:
click the start orb, and type \\192.168.0.5 hit enter
Dave_B_CAuthor Commented:
says  Windows cannot access it..
Twisted_LogicCommented:
is the IP of the netbook 192.168.0.5?  open cmd and perform an IPCONFIG /ALL and see what IP address it gives you
Dave_B_CAuthor Commented:
Do it on the host or on the netbook..? I'm pretty sure it is, though..
Twisted_LogicCommented:
netbook, and host - please post results
pbraneCommented:
Hi,

I haven't got an answer for why it worked before, but I do know, for sure, that in a workgroup environment all computers must be on the same workgroup. You need to make sure all of the computers are in the same workgroup.

Also, on all computers, make sure that there are no stored credentials messing it up. Go to control panel > User accounts > Manage your credentials > and make sure there are no stored credentials for any of the computers, for each other.

See if this starts it working.
Dave_B_CAuthor Commented:
Now in same workgroup, no change..
Twisted_LogicCommented:
do you have IP results on both machines?
Dave_B_CAuthor Commented:
No stored credentials
pbraneCommented:
Also, whilst we are waiting for the IP results, have you noticed there are three windows firewall's? (Profiles) are all three turned off on the netbook? Just in case you network has changed from home to work for example.
Dave_B_CAuthor Commented:
Can't copy IP results so can't paste/display here..? Looks like netbook is 192.168.0.5 though..?
Twisted_LogicCommented:
can we get screenshots on both machines for ipconfig /all... need IP address, gateway, subnet mask
Dave_B_CAuthor Commented:
Can't paste screenshots..?
Twisted_LogicCommented:
can you at least type in the info?
Dave_B_CAuthor Commented:
Windoews firewall is turned on on netbook.. No idea what you mean by 3 firewalls..?
Twisted_LogicCommented:
If you click screencast at the bottom then you should be able to show us..
Dave_B_CAuthor Commented:
Re Ipconfig, there's loads of  it? What specifically do you want..?
Twisted_LogicCommented:
The IPV4 addresses.. should look like 192.168.xx.xx
The IP address, subnet mask, default gateway
 
Dave_B_CAuthor Commented:
Screencast useless, regardless of settings can only resize to get less than 50% of display..?
pbraneCommented:
Ok,

Run this in the CMD box: ipconfig /all > c:\results.txt

the go and find the results text file and paste the contents please.
Dave_B_CAuthor Commented:
Host =        192.168.0.4 (preferred)
Netbook  = 192.168.0.5 (preferred) whatever that means..
Twisted_LogicCommented:
sounds like you're statically assigned.  Can you give us all the results please like pbrane asked?
Dave_B_CAuthor Commented:
Host

Windows IP Configuration

   Host Name . . . . . . . . . . . . : Beast
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection (Ethernet):

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Marvell Yukon 88E8056 PCI-E Gigabit Ethernet Controller #2
   Physical Address. . . . . . . . . : 00-24-8C-0B-7E-CD
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection (Dummy):

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Marvell Yukon 88E8056 PCI-E Gigabit Ethernet Controller
   Physical Address. . . . . . . . . : 00-24-8C-0B-7E-CE
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::285e:9869:8217:1ee%11(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.2(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 21 October 2010 10:02:18
   Lease Expires . . . . . . . . . . : 25 October 2010 20:22:54
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 335553676
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-11-2F-B8-5F-00-24-8C-0E-63-B0
   DNS Servers . . . . . . . . . . . : 216.146.35.35
                                       216.146.36.36
   NetBIOS over Tcpip. . . . . . . . : Enabled

Wireless LAN adapter Onboard Wireless connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Atheros AR5007G Wireless Network Adapter
   Physical Address. . . . . . . . . : 00-17-3F-F5-C4-2F
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::5ca6:204a:9638:f110%10(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.4(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 21 October 2010 10:02:09
   Lease Expires . . . . . . . . . . : 25 October 2010 20:22:57
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 352327487
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-11-2F-B8-5F-00-24-8C-0E-63-B0
   DNS Servers . . . . . . . . . . . : 216.146.35.35
                                       216.146.36.36
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{62BF5EBC-2B47-4646-B77A-E49D7416D9F0}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:3037:2494:b0b0:7ac4(Preferred)
   Link-local IPv6 Address . . . . . : fe80::3037:2494:b0b0:7ac4%13(Preferred)
   Default Gateway . . . . . . . . . : ::
   NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter isatap.{062C1BE0-38B9-41E2-92A5-694B11BA7888}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Twisted_LogicCommented:
I imagine that .2 is your PC and .4 is your netbook..  from your netbook click the start orb and type \\192.168.0.2
Dave_B_CAuthor Commented:
Netbook is in a homegroup, not a work group..
pbraneCommented:
I'm not sure this will solve it but try turning your wireless card off whilst you’re on a cat 5 cable. It's not good to run it that way.

Your routing table will have two IP addresses and two Default gateway's etc and that can cause conflicts.
Twisted_LogicCommented:
was this just one machine or both?
Dave_B_CAuthor Commented:
\\192.168.0.2 on netbook.. says it can't access it..?
Dave_B_CAuthor Commented:
pbrane, been running like that for ages,never a problem before..?
Dave_B_CAuthor Commented:
I've gootta go, sorry,  thanks for help, will get back to it tomorrow..
Dave_B_CAuthor Commented:
The following is the ipconfig for the netbook

Windows IP Configuration

   Host Name . . . . . . . . . . . . : Netbook
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
   Physical Address. . . . . . . . . : 00-26-B6-62-E8-C1
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Bluetooth Network Connection 3:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network) #3
   Physical Address. . . . . . . . . : 00-26-B6-6B-71-2F
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek RTL8192E Wireless LAN 802.11n PCI-E NIC
   Physical Address. . . . . . . . . : 00-26-B6-62-E8-C1
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::f477:2485:d0f4:1044%16(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.5(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 26 October 2010 13:28:11
   Lease Expires . . . . . . . . . . : 29 October 2010 13:40:38
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 385885878
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-B1-9E-82-00-24-54-3A-E0-29
   DNS Servers . . . . . . . . . . . : 192.168.0.1
   NetBIOS over Tcpip. . . . . . . . : Disabled

Ethernet adapter Local Area Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Marvell Yukon 88E8040 PCI-E Fast Ethernet Controller
   Physical Address. . . . . . . . . : 00-24-54-3E-EC-C3
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{2A4465E5-3508-4AE7-8CB0-78E06072CFE0}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Reusable ISATAP Interface {C93E8B89-8A9F-4437-B1FB-101AB9193023}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fd:4f2:1573:b0b0:7adf(Preferred)
   Link-local IPv6 Address . . . . . : fe80::4f2:1573:b0b0:7adf%23(Preferred)
   Default Gateway . . . . . . . . . : ::
   NetBIOS over Tcpip. . . . . . . . : Disabled


Dave_B_CAuthor Commented:
have disabled the wireless network connection on the host.. Now just LAN (cable) connected to router .. Made no difference...
Dave_B_CAuthor Commented:
Rebooted router, no change..
Dave_B_CAuthor Commented:
Router shows 192.168.0.5 as connected..
Dave_B_CAuthor Commented:
See screencast below showing netbook in map but error when clicking on it..
Dave-B-C-362928.flv
Dave_B_CAuthor Commented:
See below error when trying to remap..
Dave-B-C-362932.flv
Dave_B_CAuthor Commented:
This is what I get from the troubleshooter after turning off the firewall on the netbook.. Must be getting close to a solution..?

The remote device or resource won't accept the connection

The device or resource (NETBOOK) is not set up to accept connections on port  "(The File and printer sharing (SMB)"

No idea what changed to get into this state..?



Dave_B_CAuthor Commented:
No-one have any ideas how to get round this..? Any help much appreciated.. I've increased the points rating..
pbraneCommented:
Hi,

When you go to the network and sharing centre, note down how many connections you have on the home screen and whether they are classed a Home Network, Work Network or public network.

Then go into Change advanced sharing settings on the left pane, open up the profile to which your network card(s) belong, and make sure that Turn on network discovery has a dot in. Also make sure that Turn on file and print sharing has a dot in.

See if that makes any difference?
pbraneCommented:
Also, SMB is the main file sharing protocol. It runs on port 445. Open a CMD box and type NETSTAT /NA and at the top of the list, do you have TCP 0.0.0.0:445 LISTENING?
Dave_B_CAuthor Commented:
2 connections, both Home.. Network discovery etc. are fine on both.. Port 445 is listening.. No change..
Dave_B_CAuthor Commented:
That was on the host, on the netbook, 1 connection, Home, port listening ok..
Dave_B_CAuthor Commented:
I guess this is unsolvable, then..?
pbraneCommented:
Not yet, let’s try to see if the port is defiantly willing to accept a connection.

From the host open a CMD box and type the following: telnet 192.168.0.5 445

When you press enter, do you get a blank screen, or an error message saying it can't connect?
 
pbraneCommented:
Also as well as the above, can you click the start orb, type services.msc and in the resulting window check that all these services are started and set to automatic please?

1.     DHCP Client
2.     DNS Client
3.     Network Connections
4.     Network Location Awareness
5.     Remote Procedure Call (RPC)
6.     Server
7.     TCP/IP Netbios helper
8.     Workstation
9.     Function Discovery Resource Publication,
10.  UPnP Device Host services

If any are not started, please start them by right clicking and Choosing start.
 
pbraneCommented:
Also, I think we have all gone leaping way to far ahead in this. Here are some basic points to check:

1. The two computers involved are in the same workgroup.
2. The account you are using on the host also exists on the netbook, with exactly the same username and password
3. Firewalls are turned off
4. Always access the netbook by IP address using the UNC path from the start orb whilst we are fault finding. I.e. \\192.168.0.5

I know you have already tried some, but thought it would help to list the important things here and make sure they're all checked off and complete.
Dave_B_CAuthor Commented:
telnet not recognised as a command..?

re the services check, is that on Host or on Netbook?

Same workgroup, same homegroup
firewalls off
same username, no passwords
get same message as above re file and printer sharing using 192.158.0.5 instead of netbook
pbraneCommented:
dam, forgot you have to install it on Windows 7 and Vista.

If you go to  control panel, Programs and Features, Turn windows features on or off (On the left,) Tick Telnet Client, and click ok this will install Telnet. Then try again.

The services check is on the netbook please

When you say same workgroup and same homegroup, what do you mean?

Also, it might be the case that the blank password is what is stopping you. I can't remember for sure, but it rings a bell on an XP exam a long time back.

To rule this out, rather than making you add a password to your user accounts, on the netbook, click the start orb, type gpedit.msc, in the resulting window, in the left pane, under computer configuration, expand windows settings, then security settings, then local policy, then security options. In the list on the right, double click Accounts: Limit local account use of blank passwords to console logon only and select disable followed by ok.

Then try and connect again, this should allow you to connect using an account with no password.
pbraneCommented:
sorry after you have disabled the Accounts: Limit local account use of blank passwords to console logon only setting and clicked ok you have to apply the setting.

To do this, click the start orb, type cmd to get the CMD box up, in the box type gpupdate /force once this has ran, then try and connect.
Dave_B_CAuthor Commented:
Telnet command comes back with it 'could not open connection to the host, on port 445: connect failed'

Pretty much what you would expect..? Port 445 is listening, though..?
Dave_B_CAuthor Commented:
The 2 PC's are in a workgroup 'Limes', my house name..
The Home group was created on the host, netbook is joined to that Homegroup
Dave_B_CAuthor Commented:
All services you list are started on the netbook.
pbraneCommented:
Ok, thanks. This is good news in a way. At least this gives us somewhere to concentrate. We have an exact issue now. The netbook is actively refusing connections on port 445 even though it's listening. It can only be two things. One you have already ruled out the firewall.

To clarify what I meant earlier in the thread, there are three, one for each profile, home, work and public. so it helps to turn all three off just to simplify the issue. You can make sure they are all off by going to the control panel, selecting the firewall, selecting turn windows firewall on or off on the left, and then just making sure all three are turned off in the resulting box.

The other thing it could be is just a sticking session on the sharing settings. Oddly enough, when I tried this on my laptop yesterday I couldn't connect either. I messed aound and changed a setting then changed it back, and then I could connect. It's as if it freed it up. So we can try the same with yours.

Into control panel, in the network and sharing centre, change advanced sharing settings on the left, expand home or work, on file sharing connections change it to 40 or 56 bit encryption and save the settings and give it a try. Then change it back again and save it again. That was enough to get mine working.
 
Dave_B_CAuthor Commented:
gpedit.msc is not recognised as a command..? Think it' s a red herring anyway, never had problems with having no passwords before..?
pbraneCommented:
ok, that might be isolated to the business and ultimate versions of Windows 7 which can be joined to a domain. There the versions I'm used to working with, so excuse anything thing that doesn't seem to be right.
Dave_B_CAuthor Commented:
Re firewall, there is no private profile.. Turned off in the other 2..
pbraneCommented:
You don't have any third party Mcafee stuff on there do you, they seem to be able to get their stuff into most new machines?
Dave_B_CAuthor Commented:
re 40 or 56 bit encryption.. Didn't work when that was saved, also didn't work when it was re-set to original 128 bit..

Host is 7 Ultimate, netbook is 7 starter, for obvious reasons..
pbraneCommented:
Really seems like a firewall to me, and if it's not the winodws one, I'm think perhaps there's a third party one on there and it might be worth looking for those annoying new machine installs of Symantec, Mcafee and what ever else they can slip in there.
Dave_B_CAuthor Commented:
Bloody right I don't, heap of crud! :) Norton is even worse..?
Dave_B_CAuthor Commented:
OK, I'll  check again, but I'd never delibertately allow any!
pbraneCommented:
lol, true! :-)

It's those lovely free trials they give you. I've never seen one without it. 60 days of aggravation!
Dave_B_CAuthor Commented:
Remember, this was all working about 3 weeks ago..?
pbraneCommented:
I know, I've been caught out by the Mcafee one before though, all of a sudden the dam ting blocked incoming connections for remote desktop on a client.

Just out the blue. Can't take anything for granted anymore. I don't trust any of it.
Dave_B_CAuthor Commented:
Nothing looks untoward on netbook apart from something called AnyPC, which I don't know..? Is it of any use..?
pbraneCommented:
I know what else would be sure test to narrow it down, try on the webbook, and you may have to install telnet on there as well, telnet 127.0.0.1 445 and see if you can connect to yourself. Then this will prove that not only is it listening, it will also accept connections and it truly is an external to internal problem.
pbraneCommented:
Can't say I've heard of it. It sounds like a remote access program to me. Sounds harmless. Had a quick google and it seemed to confirm it.
pbraneCommented:
Also would you mind running tasklist > c:\tasklist.txt in a CMD box and posting the results of that as well. See if we can see anything sus running in the background that might have decided to block port 445?
Dave_B_CAuthor Commented:
Can connect to the myself on the netbook fine.. At least I get a blank window with telnet 127.0.0.1 as a heading..?
pbraneCommented:
yes, right, for sure then it's incoming connections.

OK, try......................

Can you perform the following on the host and netbook:

Disabling the wireless card and disconnecting the LAN cable if you are on one.

Then just enable the wireless OR LAN and leave the other disconnected for now.

Then open a CMD box and run the following commands in turn:

NBTSTAT -R (Must be a capitanl R)
Arp -a
Ipconfig /flushdns
netsh winsock reset  (This will cause a restart)

This is like the royal flush of the tcp/ip stack.

Also out of interest, can you connect to the netbook from one of the other machines you have besides the Host we always talk about?
Dave_B_CAuthor Commented:
Output from tasklist attached..


tasklist.txt
Dave_B_CAuthor Commented:
Can't connect from elsewhere in the network
pbraneCommented:
ok good just making sure we're not looking at the wrong machine. See how resetting and simplifying ht network goes. Just going through your process list now.
Dave_B_CAuthor Commented:
NBSTAT not recognised as a command on either machine..?
pbraneCommented:
you missed a t out there. It's nbtstat
Dave_B_CAuthor Commented:
Not a windows feature so can't install as per earlier..
Dave_B_CAuthor Commented:
Doh..! :)
pbraneCommented:
ok, don't worry if you can't get it to work. I've included a screen shot of it on mine if it helps. Just miss it out otherwise.
nbtstat.JPG
Dave_B_CAuthor Commented:
Yep, worked fine on host but on netbook got this..

NetBT is not bound to any devices  
pbraneCommented:
ok no problem.

I've been through every process and can't find anything that looks sus.

Let me know when your back up and running again and the result of clearing your TCP/IP stack.
Dave_B_CAuthor Commented:
Other commands worked fine, but no change..
Dave_B_CAuthor Commented:
So the not bound message is OK..?
pbraneCommented:
When you perform an ipconfig /all in a CMD box does it state NetBIOS over tcpip is disabled?
Dave_B_CAuthor Commented:
Both machines now re-booted.. No change.. For info connection of host to router is wireless only..
Dave_B_CAuthor Commented:
Yes, it is disabled on both..
Dave_B_CAuthor Commented:
.. and on the other laptop in the network, which it can connect to fine..
pbraneCommented:
yeah, That won't be the cause of the issue, it is the cause of the error message you got when you ran nbtstat though.

It's not an issue.
Dave_B_CAuthor Commented:
I lie, it is enabled on the laptop for theW ireless connect, disabled for teredo, whatever that is..?
Dave_B_CAuthor Commented:
OK..
pbraneCommented:
Right, the only thing left I can think to do is sniff the traffic.

There’s a program called wireshark. You can install it on either the host or the netbook.

We can monitor the traffic with this and see what's happening between the computers.

http://www.wireshark.org/download.html 

when you have downloaded it, start is up, click on capture, then interfaces, Find your IP address which should have a slowly moving packet count, Click start and then whilst it's monitoring the traffic make another attempt to file share. Once it's failed, go to Capture click stop. Then go to file, Save as, and then can you post the results?
pbraneCommented:
I'm going to be a real pain but thinking about it, it would be useful to see a capture from both machines.

Plus during the install it will ask you to install wincap, this is fine. Just go with all the basic default options.
Dave_B_CAuthor Commented:
I've been trying to think back to what might have changed re the netbook and the only thing that has happened, and I can't remember exactly whether it was before or after this problem started, but I now use a bluetooth mouse, rather than an ordinary wireless mouse.. Any issue there? It installed and ran without a problem..
Dave_B_CAuthor Commented:
OK I'll give wireshark a whirl, but then I'll have to leave it..
pbraneCommented:
I can't imagine that causing a problem. It does use a kind of network a PAN (Personal area network) but it won't interfere with the test we did, a telnet on the port is the purest type of connection we can get, ruling out authentication, permissions and almost everything else.

This is the very basic's of the connection. To be honest, if I can't spot anything on the packet trace, I have nowhere else to go.
Dave_B_CAuthor Commented:
Not sure if I've done this right, but this is the file I saved. after initiating the error.. There only seemed to be one interface.. If it is Ok will do the same on netbook..
Dave_B_CAuthor Commented:
Ahh... filetype wasn't allowed..?
pbraneCommented:
just rename it and change it to something like .jpg on the end. I'll change it back after.
Dave_B_CAuthor Commented:
changed file type.. from pcap to txt
Host.txt
pbraneCommented:
looks good thanks.
Dave_B_CAuthor Commented:
This is the one from the netbook..
netbook.txt
Dave_B_CAuthor Commented:
Just to eliminate it, I disabled everything I could find re Bluetooth and it made no difference..
Dave_B_CAuthor Commented:
Are you based in the UK..?
pbraneCommented:
Hi, yes I am.

I'm going to take a close look at your packet info to see if I can spot anything.

I have one more Idea though before I settle down into looking at packets.

On the host, try opening internet explorer, going to tools > internet options > Security tab > click the local intranet icon > click sites > untick automatically detect intranet network > then tick the three boxes below that > Then click advanced > untick require server verification > then in the top box next to add, type file://192.168.0.5 and click add > then type file://netbook/ > click close.

Close IE, then try again.

If that doesn't work, I'll let you know what I found in your packets.
Dave_B_CAuthor Commented:
Ok done.. No change I'm afraid..

Good luck with the packets and many thanks for the time you spent this evening.. :)

It's a good one isn't it!?
pbraneCommented:
almost imposable! :-)

Your Welcome.
pbraneCommented:
Right, I know you probably are not around now, but I can see the issue, we just have to find the cause and the fix. The packets are reaching the netbook, and the netbook is resetting the connection. Then your host tries again, and you netbook resets it again. A rest is you netbook closing the session and ending it.

So something in the packet your host sends to initiate the connection is upsetting the netbook.

I noticed that window sizing is in use, which it is by default. This can cause issue when connecting to SMB shares. We can rule this out by opening a CMD box on the netbook and the host and typing: netsh interface tcp set global autotuninglevel=disabled

Then would you be able to try again?

You can put this back to normal by the way by typing netsh interface tcp set global autotuninglevel=normal
Dave_B_CAuthor Commented:
Did what you said.. No change.. :(

I'm out of the country from tomorrow until 14th Nov, so unlikely to be able to continue this during that period..
Dave_B_CAuthor Commented:
I'm back in the country but won't be near the netbook until tomorrow.. Any further thoughts..?
Dave_B_CAuthor Commented:
Had taken the netbook with me and had to make some changes to get it to connect to the hotel wifi system.. Thought that might help but now it's back in the network, perfectly visible on the network diagrams, but the host still can't connect/map to it.. :(

Over to you..
Dave_B_CAuthor Commented:
I guess it's unsolvable..?
Dave_B_CAuthor Commented:
????
pbraneCommented:
Hi,

Sorry for the delay. I had a big email migration last week which took up too much of my personal time as well. I'm stuck to be honest with you. I can see the exact reason the connections are failing, but I don't know what's causing it to happen.

Hopefully someone else will see this post and put some ideas forward that I haven't thought about.

We could reset your TCP/IP stack, in a different method to the one above, but apart from that, I'm completely out of ideas. I'd need to get onto the systems to progress further now.

To reset the TCP/IP stack on the net book type the following into a CMD box:  netsh int ip reset c:\resetlog.log


Thanks.
Dave_B_CAuthor Commented:
No worries re delay..

Will try that  later and get back to you..
Dave_B_CAuthor Commented:
OK, I've cracked it! :)  

The suggestion above didn't help, but whilst working on the Netbook, I noticed that in the display of adapters there was only a bluetooth adapter showing, presumably for the new mouse..? Obviously this was odd as there must be a wireless adapter, given the netbook had no problems accessing the internet? I then went into the device list and saw the adapters there were OK so I disabled and then re-enabled all of them.. No change.. I then, and I thought I was taking a bit of a risk here, I un-installed all adapters in the list and then rebooted..  Lo and behold they installed automatically and all was then fine!  Can't think what was causing the non-display but that was obviously also causing some loss of functionality in the wireless adapter..? Corruption?

As you have spent so much time on it and pointed me in the right direction I would like to give you the points.. How do I flag this as the solution but assign the points to you..?

Thanks again for all your efforts!

Dave
Dave_B_CAuthor Commented:
PS last night's backup to the Netbook ran perfectly for the first time for over a month.. :)
pbraneCommented:
LOL BRILLIANT! Good find, in Hindsight, I should have asked you to re-install the drivers as well. Overlooked that one completely. I'm glad you have found it and its working.

It’s very kind of you to offer the points anyway, but from what I know, you would have to choose your own comment as the solution, (To put other people out of their misery in the future, more than anything :-) ) and this would automatically cancel the points out. I don't think there's anything you can do about that.

Not to worry though, I'm glad you finally managed to get it fixed. Mental note to self - Reset the drivers before going deep into packet level inspection.

Thanks for being patient with all the fault finding.
Dave_B_CAuthor Commented:
Not certain it was a driver problem as when I uninstalled the adapters I didn't tick the box to remove them? It was the actual Windows 7 plug and play re-installation of the adapter for the wireless card that must have done it?

Shame about the points.. :(  Thanks agian
Dave_B_CAuthor Commented:
Quick idea re the points if you cut and paste the basics of my solution comment, and add a bit about plug and play installation and post that then I can make that the solution!?
Dave_B_CAuthor Commented:
They're chasing me, so if I don't hear anything will have to accept my own solution..?
pbraneCommented:
Hi,

Sorry been tied up the last few days. Finally got a rest today.

Great, thanks for providing the opportunity.

So to summarise the solution:

We uninstalled the Network cards from Device manager and then rebooted the Netbook. This allowed the same drivers to be re-installed using the normal plug and play mechanism.

So it looks like the fault was some kind of corruption with one for the components of the driver or associated operating system components surrounding the driver.  Allowing the drivers to re-install corrected the error.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Networking

From novice to tech pro — start learning today.