Remote connections some times hung, why?

This is using Terminal Server application mode to support 10+ client connection using ms windows 2008 r2 server. User always faced the connection hung a few times per day. From the system event logs, I found 2 related events:

 Source: termdd
 eventid: 56

The terminal server security layer detected an error in the protocol stream and has disconnected the client.

Source: termdd
eventid: 50

The rdp protocol component x.224 detect an error in the protocol stream and has disconnected the client.

Please see the actions i did:

   - update network card driver
   - check that nic is configured auto-negotiable
   - Open RDP-Tcp properties, and change the layer to “RDP Security Layer” rather than “Negotiable”

As for the rdc, most of the users are using version 6.3.9600. I am currently monitoring now. What else could be the problem?

Thanks,
LVL 1
MichaelBalackAsked:
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Naitik GamitSoftware DeveloperCommented:
0
Sajid Shaik MSr. System AdminCommented:
check this Microsoft solution

try the following solution

https://support.microsoft.com/en-us/kb/2533983

is the issue still remains then update the network card drivers at server as well as client side with default configurations....

all the best
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Prashant ShrivastavaConsultantCommented:
Check if swich is overheating.
Check if there is earthing problem.
Check Antivirus protection and disable it to see if its involved?
Also try setting the NIC speed to auto and see if that helps.
Have you tried to not use NLA, or lower the security on the RDP-tcp properties to see if it is involved in the error?
Have you upgraded the RDP client to RDC 7 and tried with this version?
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chanderpal singh rathoreMicrosoft Exchange EngineerCommented:
HI MichaelBalack,

Error: Source: termdd
 eventid: 56

The terminal server security layer detected an error in the protocol stream and has disconnected the client.

Sol: Follow the below link"

http://blogs.technet.com/b/askperf/archive/2010/03/25/the-curious-case-of-event-id-56-with-source-termdd.aspx

=================

Source: termdd
eventid: 50

The rdp protocol component x.224 detect an error in the protocol stream and has disconnected the client.

Sol:  This issue occurs due to many reasons but you can try this as suggested by microsoft:

. Launch TSCC.MSC and delete the RDP-tcp listener.
2. Reboot.
3. Go back to TSCC.MSC and create a new listener.
4. Reboot.

Good Luck!!!!!!!!!!!!!!!!!!!!
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MichaelBalackAuthor Commented:
Hi all,

Sorry for the delay. I'll come back to you guys within these few days.
0
MichaelBalackAuthor Commented:
I follow Chanderpal's suggestions and finally the hung problem no more.
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