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Server 2008R2 Terminal Server Black Screen

Posted on 2013-01-25
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Last Modified: 2013-01-31
Hello,

I have a 2008R2 Terminal Server, sometimes when users connect from outside (never internal) they get prompted for the credentials and then presented with a black screen that after 2-5 seconds disconnects them.

I am seeing no errors in applications, but occasionally event ID 50 & 56 in system.

All windows update, latest drivers and bios.

Tried various fixes including disabling RSS & Chimney from TCP.

BUT.....

If when the black screen appears you press CTRL-ALT-END, the desktop appears and you can carry on as normal!

Any suggestions welcome..
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Question by:alexbuckland1
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Expert Comment

by:netballi
ID: 38819183
Its a known bug and Microsoft has been working on it.

In the mean time just keep using our good old friend CTRL-ALT-END
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Author Comment

by:alexbuckland1
ID: 38819235
Arrrrgh.

Thats fine for me, but the explaining it to the customer is another story :-)
Is this detailed somewhere that I can point to the customer to?

A.
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Author Comment

by:alexbuckland1
ID: 38820472
Update:

Users started reporting that CTRL-ALT-END doesnt work anymore. I have confirmed this.

Damm!
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Accepted Solution

by:
alexbuckland1 earned 0 total points
ID: 38823125
Hi guys

I have finally fixed the issue.
The problem was caused my the MTU setting on both the WAN interface of the firewall (sonicwall) and the LAN card in the terminal server.

I lowered the MTU on the WAN interface to 1300 and create a regdword in the registry on the NIC card to lower the MTU to 1300 also.

Happy Days!
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Author Closing Comment

by:alexbuckland1
ID: 38838903
It worked!
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