Windows Networking




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The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.

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I have dell poweredge R520 and upgraded all the bios and drivers on it. It had esxi 5.1 U1 installed. I tried the below command to install 6.5 and gave me error:

esxcli software profile update -p ESXi-6.5.0-20170404001-standard -d

 VIB Micron_bootbank_scsi-mtip32xx-scsi_2.4.10-1OEM.500.0.0.472560 requires com.vmware.driverAPI-, but the requirement cannot be satisfied within the ImageProfile.
 VIB QLogic_bootbank_scsi-qla4xxx_634.5.18.0-1OEM.500.0.0.472560 requires com.vmware.iscsi_linux-, but the requirement cannot be satisfied within the ImageProfile.
 VIB Emulex_bootbank_scsi-be2iscsi_4.4.264.0-1OEM.500.0.0.472629 requires com.vmware.driverAPI-, but the requirement cannot be satisfied within the ImageProfile.
 VIB QLogic_bootbank_scsi-qla4xxx_634.5.18.0-1OEM.500.0.0.472560 requires com.vmware.driverAPI-, but the requirement cannot be satisfied within the ImageProfile.
 VIB QLogic_bootbank_net-qlcnic_5.1.157-1OEM.500.0.0.472560 requires vmkapi_2_0_0_0, but the requirement cannot be satisfied within the ImageProfile.
 VIB Brocade_bootbank_net-bna_3.2.0.0-1OEM.500.0.0.472560 requires vmkapi_2_0_0_0, but the requirement cannot be satisfied within the ImageProfile.
 VIB Intel_bootbank_net-ixgbe_3.14.3-1OEM.500.0.0.472560 requires vmkapi_2_0_0_0, but the requirement cannot be satisfied within the ImageProfile.
 VIB …
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I need remote access to two computers in my home office for about a month.  I will be traveling with a laptop (Windows 10) and need to remote into the two PCs back in my home location (both of these PCs are Windows 7).  What would be the best method (and most reliable/secure) for me to be able to connect to these two computers.  Your help is appreciated.  Thank you.
Hi, I can access my Share File in WAN (public) address, but no luck in LAN. Can anyone explain?

Attachment is the error screenshot. Both machines are Win Server 2012R2
Hi experts,
Anyone seen this? Windows 10 user can't get to his mapped network drive.  Says not not available yet on other computers she can access just fine
I have 2 DCs. I demoted a domain controller 2012 server, which had FMSO roles prior the seizing. I moved the FMSO to the secondary server. I used the force option to demote it as it wasn't working properly with soft demotion. The server is now in a workgroup. If I try to join the server back to the domain, it comes up with an error.  I have tried this on a seperate test server and managed to join the domain fine. I can ping the working DC fine on the demoted server and vica versa. Any ideas what I can do?

It says that the AD DC could not be contacted.

Here is the extra information it provides.
Note: This information is intended for a network administrator.  If you are not your network's administrator, notify the administrator that you received this information, which has been recorded in the file C:\Windows\debug\dcdiag.txt.

The following error occurred when DNS was queried for the service location (SRV) resource record used to locate an Active Directory Domain Controller (AD DC) for domain "mydomain.local":

The error was: "DNS name does not exist."
(error code 0x0000232B RCODE_NAME_ERROR)

he query was for the SRV record for

Common causes of this error include the following:

- The DNS SRV records required to locate a AD DC for the domain are not registered in DNS. These records are registered with a DNS server automatically when a AD DC is added to a domain. They are updated by the AD DC at set intervals.…
I have a strange problem I haven't seen before and it appears to be related to name resolution.  A customer has a laptop computer running Windows 7 64-bit w/SP1.  It is connected to a domain and when logged in, has access to several shares on different servers via mapped drives.  When the user is in the office on the local network, all of the shares on the mapped drives are accessible.  However, when the user takes the laptop home, connects to his local Internet and attaches to the corporate network via SonicWALL NetExtender, he has only intermittent access to the main server's shares (server1).  When you click on one of the mapped drives, it basically says it can't find the drive or it is inaccessible.  Other mapped drives to shares on different servers (server2 and server3) are still accessible and never lose connection.

I initially thought it was a DNS issue.  I checked the NetExtender connection info and it was set to the corporate DNS server.  I pinged the server by IP address and by name and had all good replies.  I ran NSLookup and it identified the correct DNS server, as well as the server on which the shares are located that he can't access.  No odd settings in the host file, plus I cleared arp table entries, etc., etc. - anything I could think of.  Still, the same result.  I finally went into a browser and accessed one of the server shares by IP address ( instead of name and I was able to get to it with no issue.   Same for the rest of the shares.  I …
Hello -

I’m trying to free up IPs in my 1st subnet (there’s 2) and I’m down to 1 free address, according to the statistics on the scope.  Weird thing is that when I successfully moved 4 static IP printer addresses over to the other subnet, and deleted their reservations, the statistics do not increase by 4 addresses – it still shows only 1 available address.  I double-checked the active leases and do not see my 4 printer addresses leased – statically nor dynamically.  I restarted the DHCP server service thinking maybe the server just hasn’t recognized the open addresses yet – didn’t help.  Wondering why it's not releasing the addresses back into the pool.

Thanks for your help
I have the computer name and I am trying to find who this desktop pc belongs to.  I have to find it using remote desktop but the pc does not allow access.  I also tried nbtstat but I still could not find it.  Thanks for your help
I have been trying to re establish a lost scanning connection with my Ricoh Aficio 2022 with my computer workstation.   No matter, SMB just failed for no reason.    I gave up.  it was working for years then just suddenly failed

So I installed filezilla.   Still does not work but i think I just do not have the correct syntax.

Filezilla server invoked for my computer.
The Ricoh then set up as follows

Port 21
Server (my workstation)  or \\servername    (tried both)
Path:    \folder    or  \sharename\folder
user:    username
password   password

None of this works.

I am missing one syntax call.  What is it?

The FTP connections work just fine on the LAN.       This is all LAN based.  I am not making any external WAN calls (yet)

Ports 21 and 22 forwarded to my computer

thank you
How can I configure BIND DNS to work as a slave for Windows DNS for different environments.  I already built and configured for DNS Bind to work as a slave in a LAB environment however Im trying to phase this into other environments at a slow pace. I created a template and using puppet to configure the environments.  I put an if statement in there for LAB, would it be a else or elsif for another environment or am I going about the wrong way?  Any help would be appreciated.  Thanks!

Template code
#Global Options
options {
  directory "/var/named";
  listen-on port 53 { localhost; <%= @ipaddress_eth0 %>; };
  allow-query { any; };
  dump-file   "/var/named/data/cache_dump.db";
  statistics-file "/var/named/data/named_stats.txt";
  memstatistics-file "/var/named/data/named_mem_stats.txt";
  recursion yes;
  empty-zones-enable no;
  check-names master warn;     #Must be WARN only for AD
  dnssec-enable no;
  dnssec-validation no;
  dnssec-lookaside auto;

  ## Path to ISC DLV key ##
  bindkeys-file "/etc/named.key";

  pid-file "/run/named/";
  session-keyfile "/run/named/ses.key";

#Logging Section  -- What, how, and where logging takes place can be extensively configured in BIND
logging {
  channel default_file {
      file "/var/log/named/default.log" versions 3 size 5m;
      severity dynamic;
      print-time yes;
  channel general_file {
      file "/var/log/named/general.log" versions 3 size 5m;
      severity dynamic;
      print-time yes;

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I built a SQL Server with 2-instances, the default and a named instance. The application is connecting to the named-instance and connects fine most of the time. But then the next morning or after a bunch of reboots, the application cannot connect to the named-instance. However, connecting to the default instance is never a problem. I'm not sure if it's a Firewall issue, a WIN issue and/or a SQL config issue. Connecting locally to the named-instance is never a problem. The problem is connecting remotely. And yes the server is configured to allow for remote connections. I am a DBA, so I have info on the db server. Below are the named-instance configs and attached is the error when trying to connect to the named-instance via a remote machine. Please let me know what this might be.

The following are the configs:

01. default instance: 1433 for TCP
02. firewall allows for 1433 TCP

03. named instance: 1434 for UDP
04. firewall allows for 1434 UDP

05. named instance: 1435 for TCP
06. firewall allows for 1435 TCP

07. SQL Server Network Config -> Protocols for InstanceName -> TCP/IP Properties -> IP Addresses:
 - IPAll -> TCP Dynamic Ports set to blank
 - IPAll -> TCP Port set to 1435

08. added SSIS, DBE and SQL Agent service-accounts to 'log on as a service'

09. will be adding [NT AUTHORITY\LOCALSERVICE], i.e. the SQL Browser Service to 'log on as a service' as well
 - this is not done yet, but will be done tomorrow
 - no errors in log for this, but it is …
Hi all,

I had Sophos EndPoint installed on my computer, i uninstalled it and installed Symantec EndPoint. Now on outlook it shows disconnected, I cant ping any computer on domain, but i am getting the right IP address. I uninstalled SEP, nothing changed, i took the computer off domain, put on it on workgroup, and then put it back on Domain, still nothing changed.

Anyone else has experienced it? or know how to fix it?
Hello people,

I have been reading a little up on the NETDOM command, but most threads conclude to renaming your Domain Controller.  I would, basically, like to adjust a domains Fully Qualified Domain Name... with the smallest amount of disruption to the existing network clients etc.

Is this possible?! looks scary!... can it be done without breaking trusts between the clients and the host server?!

Currently, this network is just a little scenario, 5 clients, 2 printers, 1 x 2008 R2 server.  The existing FQDN is and I would like to axe the 'hqserver'.

Any wisdom will be infinitely appreciated.

Best regards,

What are some great computer certifications to look into? Both PC and MAC? Networking? All of the above.
Using an a/v mgt console to scan for computers on the network (from Win server 2008r2).  
Once machines are found I can push install the endpoint protection from the console.
Of 30 machines (mixed win10, win7) 10 are found.  20 are not.  (OS didn't seem to matter, some of each in found and not found).

Using nmap,
the 10 that are found show:
     137/upd open               netbios-ns

The 20 that are not found show:
     137/upd open|filtered netbios-ns

1. I've check the firewall settings on each, the settings are the same.
2. Have imported wfw to a machine that isn't found (using wfw from a found machine)
3. I have "restore default policy" and enabled 137 over the domain

Mgt console still can't find the 20.  It seems I need to remove the "filter" on the port.
Don't know how to make this happen.
Any suggestions?

nmap results of a found machine:
Nmap scan report for xx.xx.xx.73
Host is up (0.016s latency).
135/udp open|filtered msrpc
137/udp open          netbios-ns
138/udp open|filtered netbios-dgm
139/udp open|filtered netbios-ssn
443/udp open|filtered https
445/udp open|filtered microsoft-ds

nmap results of machine not found
Nmap scan report for xx.xx.xx.55
Host is up (0.00s latency).
135/udp open|filtered msrpc
137/udp open|filtered netbios-ns
138/udp open|filtered netbios-dgm
139/udp open|filtered netbios-ssn
443/udp open|filtered https
445/udp open|filtered …
I have a DELL T630 with WINDOWS Server 2012R2 running AD, DNS, WINS.  It has been working fine for over a year.  All of a sudden it will not show anything but 3 of the PCs on my network (including itself).  I have a second 2012R2 running as my 2nd AD with AD and DNS - it sees all.  I am using Trend Micro WFBS (all systems) and Malwarebytes (only on this Server - I HAVE tested with these turned off AND then with both programs uninstalled) .  The NIC is teamed and mapped through the VM NIC (Images NIC 1 & NIC 2)

Change adapter settings window:

I have checked Network discovery and followed a bunch of suggestions I found on the internet, but most of them were how to get a PC to see the DC, mine is the opposite.  I noticed this two days ago when I tried to access one of the NASes from this server.  It shows the WD NAS, no problem and connects OK, it will NOT allow access to the NetGear NAS either using either the UNC or IP address.  

Using the UNC I get an error (see attached image 1).  

Get the same error when using IP address, however It DOES show up in my network folder (both methods)  as a "Media Device" (Image 2).
And it is accessible via IE (Image 3 & 4)
After providing credentials:

All PCs on this network and the other DC see everything and access all with no problems.  We…
Hi all,

Does anyone know how to find out on how many computers a user is logged onto across the domain?

I tried to use psloggedon, didn't work for me.

when user logs into his workstation , which is joined to the domain.

how it works, i said in an interview that it is through LDAP which connects to domain controller

answer was not satisfying, can some body elaborate on this
Attempting to install avast! Small Office Administration software to run from my Win7Pro workstation to communicate with 8 other Win7Pro workstations, one SBS2011 server and two Server 2008 R2.  Although I can deploy avast! to all the workstations from mine (STAT02), I get the following error when viewing the Network:DefaultGroup in avast!  'This computer has never successfully connected to avast! Small Office Administration."

avast! support suggests that this is a firewall issue and that I need to disable the windows firewall in the Domain Group Policy.   This will at least help in determining whether it is a firewall issue or something else.   IF it is determined to be a firewall issue, then I can turn the policy back on and configure the firewall to allow certain ports.    So here is what I did:

      From SBS2011 server
      Run CMD (run as administrator)
         Group Policy Management
                     Default Domain Policy (right click) and Edit

   Default Domain Policy
      Computer Configuration
            Administrative Templates
                  Network Connections
                     Windows Firewall
                        Domain Profile
CHANGE:            Windows Firewall: Protect all network connections to DISABLED (from Not Configured)

Had both STAT02 (which has the avast! SO software on …
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I provide occasional support for a business that has a network of about 10 PCs (all running Windows 7). They have a Windows Small Business Server (SBS 2011 Essentials) which is primarily used to provide shared access to a SQL database used by an application that runs on all the clients. There are also some shared folders on the server the client PCs have read/write access to.

Everything is hard wired to a 10Gb network switch, a router, and their cable modem. Been set up this way for years.

Starting last week, clients are randomly losing their connection to the SQL DB. When this happens, the network icon on the affected PC has changed from showing connected to "myserver.local" to showing connected to "network 2" (or 3, or 4, etc.). At this point, they seem to still be able to access the shared folders on the server, but they can't reconnect the client application to the SQL DB until they reboot the PC and it again shows connected to "myserver.local".  Sometimes it takes multiple reboots.

Could this be a "flakey" switch occasionally dropping PC connections, or does it seem to be more software-related?

Also, about the same time they started having this problem, Symantec started reporting over 250,000 blocked "firewall events" per day with UDP port 1900 and TCP port 2869. Prior to 5/17, Symantec rarely (if ever) reported these events. Is it possible these are related to the change in network connections (either a cause or a result of)?  I …
Hello there

I'm in the process of upgrading my client's 2008 DB mirroring environment to SQL 2016. I've got an enterprise license and would like to set up AlwaysON availability for DR. I just want the basic AlwaysON configuration, not full database failover clustering.

So based on my research I need to set up Windows Failover Clustering on the Windows 2012 servers.

All I want is a similar set up for the mirroring architecture:
1 PROD server with 5 live databases
1 DR server with mirrors of the 5 live databases
Asynchronous with manual failover.

The problem we are having is in setting up the actual failover cluster. The IP address that is needed. We have big questions about this and how it needs to be set up.

The problem is that the PROD and DR servers are on completely different networks. So this common IP address, where does that get created, and does it need to be able to connect to both of the other servers (PROD and DR) seamlessly?

Here is what my network admin has said about the issue:

"One of the issues flagged out was the fact that we do need to have a common IP address for the cluster object and based on my readings, this IP needs to be one that can float to both servers and this would be the one that would be used by the applications that connect to these servers.
Due to our current setup, this is not possible and we would need to add a new VLAN to our networking environment, connect this VLAN to all our uplinks and to the enclosure uplinks,…
My adapter is Tp-Link Wn722n V2 and it is not connecting with vmware and virtualbox.he is showing driver error on vmware Untitled545.png.My adapter is working properly on host(Windows 10) osScreenshot_11.png.
I had this question after viewing How to access a Windows 7 printer from a Windows 98 SE PC ?.

I have essentially the same problem as referenced in the above thread.  But no true solution was ever provided to that question, so I need to ask again:  How can Windows 98SE and Windows 7 be configured to allow printing from Windows 98SE to a printer that is shared under Windows 7?

Further Info:

In the registry, I have already changed LMCompatibilityLevel entries to 3 under Windows 98SE, and to 1 under Windows 7.  This change does allow FILE sharing to working properly between the two machines, and allows me to get further in attempting to add the shared printer under 98SE.  But at this point, the add printer dialogue now always says that the referenced printer is offline, regardless of whether or not there is even a valid printer share of that name on the WIndows 7 machine, and regardless of whether such printer is actually online or not.

While attempting to add the printer under 98SE, I am logged in with a user name and password that exists on the Windows 7 machine (with Administrator rights).

From other articles and purported solutions that I have come across online, this combination should be all that that is needed in order to add a Windows 7 shared printer under 98SE.  But I am still having no success.

Unlike the other thread …
what tools can be used to identify if a device is currently connected to an AD domain. we need to do some remote security scans but obviously can only do so if the device is currently online. what techniques could be used to get an "online" report?
Windows 2008 Server 64bit
username administrator
password admin@1234
source file location e:\Chksum\euro.txt

Windows 7 64bit
username administrator
password admin@1234
detestation folder location d:\PassPrint\Access

both network reachable also we can transfer file manually

Windows Networking




Articles & Videos



The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.