Unable to log on to w2k server

We have an environment where w2k3 is the domain controller. Another
server w2k that is part of the domain. We are running active directory
also at the domain controller. We have 2 more w2k3 servers running under
Workgroup connected to the network as database and transaction servers.

All connected PCs or servers have their own IP address.

Recently we came across problems where users are able to log on to the
network but are not able to access directories in the w2k server. They
are prompted for their User ID and Password.

At times user can't even log on to the domain. Even when you use the
administrator ID to log on.

Initially, we thought it was insufficient user licenses but after adding
more user licenses, the problem still persists.

We suspect damage to the active directory database or DNS server.

Any thoughts or suggestions will be greatly appreciated.

any errors in event logs on the domain controllers?

Regards,
Andrei Ungureanu
www.itboard.ro

"tslu" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> We have an environment where w2k3 is the domain controller. Another server
> w2k that is part of the domain. We are running active directory also at
> the domain controller. We have 2 more w2k3 servers running under Workgroup
> connected to the network as database and transaction servers.
>
> All connected PCs or servers have their own IP address.
>
> Recently we came across problems where users are able to log on to the
> network but are not able to access directories in the w2k server. They are
> prompted for their User ID and Password.
>
> At times user can't even log on to the domain. Even when you use the
> administrator ID to log on.
>
> Initially, we thought it was insufficient user licenses but after adding
> more user licenses, the problem still persists.
>
> We suspect damage to the active directory database or DNS server.
>
> Any thoughts or suggestions will be greatly appreciated.

Any errors if using dcdaig and nslookup?

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"tslu" <(E-Mail Removed)> wrote in message news:%(E-Mail Removed)...
We have an environment where w2k3 is the domain controller. Another
server w2k that is part of the domain. We are running active directory
also at the domain controller. We have 2 more w2k3 servers running under
Workgroup connected to the network as database and transaction servers.

All connected PCs or servers have their own IP address.

Recently we came across problems where users are able to log on to the
network but are not able to access directories in the w2k server. They
are prompted for their User ID and Password.

At times user can't even log on to the domain. Even when you use the
administrator ID to log on.

Initially, we thought it was insufficient user licenses but after adding
more user licenses, the problem still persists.

We suspect damage to the active directory database or DNS server.

Any thoughts or suggestions will be greatly appreciated.

Running dcdiag give no problem.

However, I tried NSLOOKUP and an error which says "Can't find server
name for address x.x.x.x.

Robert L [MVP - Networking] wrote:
> Any errors if using dcdaig and nslookup?
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on
> http://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access on
> http://www.HowToNetworking.com
>
> "tslu" <(E-Mail Removed) <private.php?do=newpm&u=>> wrote in message
> news:%(E-Mail Removed)...
> We have an environment where w2k3 is the domain controller. Another
> server w2k that is part of the domain. We are running active directory
> also at the domain controller. We have 2 more w2k3 servers running
> under
> Workgroup connected to the network as database and transaction servers.
>
> All connected PCs or servers have their own IP address.
>
> Recently we came across problems where users are able to log on to the
> network but are not able to access directories in the w2k server. They
> are prompted for their User ID and Password.
>
> At times user can't even log on to the domain. Even when you use the
> administrator ID to log on.
>
> Initially, we thought it was insufficient user licenses but after
> adding
> more user licenses, the problem still persists.
>
> We suspect damage to the active directory database or DNS server.
>
> Any thoughts or suggestions will be greatly appreciated.

This troubleshooting may help,

NslookupTroubleshooting Nslookup.exe. 1. *** Can't find server name for address w.x.y.z : Timed out. Cause: 1. the DNS server cannot be reached. ....
http://www.chicagotech.net/nslookup.htm


Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"tslu" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
Running dcdiag give no problem.

However, I tried NSLOOKUP and an error which says "Can't find server
name for address x.x.x.x.

Robert L [MVP - Networking] wrote:
> Any errors if using dcdaig and nslookup?
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on
> http://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access on
> http://www.HowToNetworking.com
>
> "tslu" <(E-Mail Removed) <private.php?do=newpm&u=>> wrote in message
> news:%(E-Mail Removed)...
> We have an environment where w2k3 is the domain controller. Another
> server w2k that is part of the domain. We are running active directory
> also at the domain controller. We have 2 more w2k3 servers running
> under
> Workgroup connected to the network as database and transaction servers.
>
> All connected PCs or servers have their own IP address.
>
> Recently we came across problems where users are able to log on to the
> network but are not able to access directories in the w2k server. They
> are prompted for their User ID and Password.
>
> At times user can't even log on to the domain. Even when you use the
> administrator ID to log on.
>
> Initially, we thought it was insufficient user licenses but after
> adding
> more user licenses, the problem still persists.
>
> We suspect damage to the active directory database or DNS server.
>
> Any thoughts or suggestions will be greatly appreciated.