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Most of the time my RDC works perfectly. Sometimes it slows to a complete crawl and I cannot even get my mouse clicks to register on the remote computer. The client computer is Windows XP, so there's no chance of it being a tcp autotuning issue (not introduced until Vista AFAIK). I also get "session ended" messages randomly.

Here's the computer specs -

Client computer

  • Windows XP Pro SP3
  • RDC 6.0
  • Core Duo T2600 (2.16 ghz)
  • 2 GB memory
  • 5Mbps download, 500 Kbps upload

Sever computer

  • Windows Server 2008 R2 Enterprise SP1 (x64)
  • Core i7 3.07 ghz
  • 12 GB memory
  • 2 Mbps download, 5 Mbps upload

I've tried tuning down all settings (resolution, colors, etc) to no success. I can communicate in other ways with the server (FTP, HTTP, etc) when its slow over RDC with no problems at all.

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RDP is much more sensitive to network conditions then FTP or HTTP are. When the problem is occurring I would suggest running a network capture on the client and the server and look for the following:

  1. A large volume of broadcast traffic, at layers 2 and/or 3

  2. A large volume of TCP retransmits

  3. Latency between the client and the server

  4. Packet loss between the client and the server

share|improve this answer
Can you recommend a good tool to use for this? I do not have experience with this kind of network analysis. – just.another.programmer Sep 10 '11 at 18:53
Wireshark, Colasoft Capsa, Microsoft Network Monitor. – joeqwerty Sep 10 '11 at 19:16
Sorry for the long delay, I was able to use a workaround for awhile. I have time now to actually solve the problem. I ran Wireshark, set it to filter for the TCP stream with the RDC connection and it picked up tons of "Bad TCP" traffic as it calls it. How should I go about analyzing the problem and solving it? – just.another.programmer Dec 10 '11 at 17:20

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