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We have a customer with a server (Win2k8R2) we'd like (and have to) access. On that server our IP is set as an allowed incoming connection.

The problem is that out of 7 computers in our own network this connection is only possible on 5, it fails on 2 (with same credentials).

Out of that 5 that can connect, one is the strangest, an internal server: if I remotely connect to it with my credentials and I use RDP to customer server, it doesn't work. However, if I use other credentials, I can use RDP from there (both users are admin).

so:

1,2,3,4 --> SRV :ok

6,7 --> SRV :fail

6, 7 --> 4 --> SRV :ok with user x

6, 7 --> 4 --> SRV :fail with user y

I haven't managed to find out what is the reason for this and how could I set or ask to be set in order to access that server from all computers inside our network witk permitted IP.

PS. I have read several threads on it and I've seen only one similar (but not same) problem - without solution

  • Is OS and/or RDP client version the same on all the 7 computers? If not, maybe the server could be configured to accept only remote connection from computers with Network Level Authentication. – Emyl May 3 '13 at 12:32
  • OS are different, however, that still doesn't explain why does RDP work from the same computer with one windows credential and not from the other, the HW/SW environment is the same there. In the mean time, thanks for the NLA tip, I will look into it. – csikiati May 3 '13 at 13:04
  • Are these domain based accounts? Are there GPO's involved.? Need more details about the enviro. – tony roth May 3 '13 at 13:29
  • yes, the final accounts used to reach the server are domain based, not yet sure about GPO's there – csikiati May 3 '13 at 13:56
  • also what vpn solution is in place, do you get an access denied or just no connection? – tony roth May 3 '13 at 14:30
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Once again, trivial error, it is wort checking and double-checking the IP address and port. That was the problem. Solved with an extra amount of scrutiny.

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