Can you run RDP 8 on 32 bit Windows Server Standard 2008 (not R2)?
This client has a 32 bit Windows Server Standard 2008 server and he is having problems with RDP. One problem shows up as an Error 56 "The Terminal Server security layer detected an error in the protocol stream and has disconnected the client." The error source is "TermDD"
When he gets this error, he is typically (although I cannot confirm always) on one of his Fujitsu Lifebook laptops (running XP SP3 x32). The slowness and occasional disconnect also happens to one of his tech support people when they RDP in using a VPN built into his SonicWall TZ210 (the TZ210 is between the router and the Cbeyond external internet connection. It should have nothing to do with the internal connections AFAIK.)
The 16 bit app that he runs is based on Open Insight (or something very similar) and spikes the CPU it is on (we have set the affinity of the app to place it on a CPU that seems to not be used as much by the OS) at 100% whenever he prints to a network printer. It stays spiked for 2 minutes after the print job.
He is running a 32 bit server because an ancient app that he depends on to run his business is an old 16 bit DOS app that he has been told requires a 32 bit server. I am not even sure that is true. Can't you run 16 bit DOS apps on 2008 R2 x64 or even 2012 x64?
I have upgraded his wi-fi to an ASUS RT-AC66U router. The office is not that big - so distance is not an issue. I can get great signal on my android phone using wi-fi analyzer to test signal strength (although the signal does go up and down a lot - and I saw it drop off altogether twice - but only for a second).
This has had him flustered for months. I am new to his office and just reaching out to make sure that I have used every resource possible to try and fix his RDP connectivity issues.
Thanks so much for your help!