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Several PCs cannot connect to or ping one server and vice versa.

One-by-one over the course of almost 2 months, five of our PCs have stopped being able to connect to our file server via UNC or even ping it (neither by IP or name.)

The reverse is also true, the server is not able to open shares on or ping these PCs. They can connect to and ping any other server without a problem. The server has no problem connecting to other PCs or servers either.

The PCs are not all the same model. Four run XP Pro, one ran XP Media Center but is now running XP Pro. The server is Server 2003 Appliance Edition.

I tried unjoining two from the domain, but the same problem persisted before and after rejoining them. I tried moving them to a different location in the building, with no better luck. I also tried editing the hosts file, reinstalling the NIC drivers, pushing images onto some them, formatting and reinstalling Windows on others. The problem persisted.

One of the PCs is a laptop. On this one I was able to connect it via WiFi only and did finally manage to connect to the server that way, but when connected by Ethernet only it still fails.

When I check Address Leases in DHCP I dont see any duplicate MAC addresses and there doesnt seem to be an IP conflict.

I am out of ideas, please help.
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v-net
Asked:
v-net
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1 Solution
 
CoSmismgrCommented:
Can you explain what the network topology looks like from the server to these PC's? Switches, hubs, segments, etc..
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ComputerTechieCommented:
what are you using for antivirus and firewall.
have you tried to diable the filrewall.

CT
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CoSmismgrCommented:
"Can you explain what the network topology looks like from the server to these PC's? Switches, hubs, segments, etc.."
Also, can you do the same for your wifi access point?
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v-netAuthor Commented:
Yes, disabling the firewall was the first thing I tried. It's still disabled. Symantic anti-virus was installed on all the PCs prior to imaging or formatting, but right now is only installed on 3.

Topology:

Server <> Switch <> Switch <> PC

We just tried plugging one directly into different switches.
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v-netAuthor Commented:
"Also, can you do the same for your wifi access point?"

Sorry, didn't notice this...

Server <> Switch <> Switch <> Wireless Access Point <> PC
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ComputerTechieCommented:
would it be possible to make it

server to switch 1 to wireless access port
server to switch 2 to pcs?



CT
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CoSmismgrCommented:
What does an "ipconfig /all" command show on one of the  PC's that cant connect to the server?
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v-netAuthor Commented:
"What does an "ipconfig /all" command show on one of the  PC's that cant connect to the server?"

Comparing them to other PCs that are working, nothing is abnormal.

        Connection-specific DNS Suffix  . : law.local
        Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connection
        Physical Address. . . . . . . . . : 00-10-DC-AB-A9-34
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 10.100.2.38
        Subnet Mask . . . . . . . . . . . : 255.255.0.0
        Default Gateway . . . . . . . . . : 10.100.0.7
        DHCP Server . . . . . . . . . . . : 10.100.0.10
        DNS Servers . . . . . . . . . . . : 10.100.0.10
                                            10.110.0.10
                                            64.135.1.20
                                            64.135.2.30
        Primary WINS Server . . . . . . . : 10.100.0.10
        Lease Obtained. . . . . . . . . . : Monday, July 06, 2009 10:23:35 AM
        Lease Expires . . . . . . . . . . : Tuesday, July 14, 2009 10:23:35 AM

~~~

"would it be possible to make it

server to switch 1 to wireless access port
server to switch 2 to pcs?"

May try this later today.
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CoSmismgrCommented:
What is the IP address of the file server involved? Can you supply an ipconfig result from it as well?
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v-netAuthor Commented:
Windows IP Configuration

   Host Name . . . . . . . . . . . . : MIA-FILE
   Primary Dns Suffix  . . . . . . . : law.local
   Node Type . . . . . . . . . . . . : Unknown
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : law.local

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Description . . . . . . . . . . . : HP NC7782 Gigabit Server Adapter
   Physical Address. . . . . . . . . : 00-14-C2-C1-A3-94

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : HP NC7782 Gigabit Server Adapter #2
   Physical Address. . . . . . . . . : 00-14-C2-C1-A3-95
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 10.100.0.11
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . : 10.100.0.7
   DHCP Class ID . . . . . . . . . . : STORAGEWORKSNAS
   DNS Servers . . . . . . . . . . . : 10.100.0.10
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CoSmismgrCommented:
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CoSmismgrCommented:
Also, depending on your server's service pack, look at:
http://support.microsoft.com/kb/898060/
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v-netAuthor Commented:
This worked! Thank you very much.
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