Unable to Remote Desktop: "Reason: 516 - Windows Sockets connect failed."

Unable to Remote Desktop to internal server.  receive the following error:  "Reason: 516 - Windows Sockets connect failed."  The server has been rebooted many times and this did work about three weeks ago and sicne then, no changes were made.
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Karthik VCommented:
Dear ETC_IT,
1.  Can You Able to Ping The Server IP
2.  And Check The RDC is Enabled on that server.
3.  Is the server is Running With Service Pack?
ETC_ITAuthor Commented:
I am able to ping successfully.  RDC is enabled.  I have tried turning it off and back on as well.  This is Server 2003 R2.
Karthik VCommented:

Please Check the Firewall is it enabled or disabled
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ETC_ITAuthor Commented:
Karthik VCommented:
If No Issues for you to Posting the event Log Here..

Can You Post it??? and Please mention from when you are facing the problem.
ETC_ITAuthor Commented:
The problem started about 4 weeks back.  There is nothing out of the ordinary in the even logs as all.

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Windows Server 2003

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