"The RDP Protocol Component "DATA ENCRYPTION" Detected an Error..." error message

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Article ID: 323497 - View products that this article applies to.
This article was previously published under Q323497
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SYMPTOMS

After you install Windows 2000 Security Rollup Package 1 (SRP1), Terminal Services clients may not be able to connect to the Terminal Services server. You may also experience this problem when you use Remote Desktop Web Connection on a Windows XP Professional computer to connect to a Terminal Services server. When this problem occurs, event ID 50 is recorded in the system event log:
Event Type: Error
Event Source: TermDD
Event ID: 50
Description:
The RDP protocol component "DATA ENCRYPTION" detected an error in the protocol stream and has disconnected the client.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
307454 MS01-052: Invalid RDP data can cause Terminal Services failure
The Terminal Services client may also receive the following error message during a connection attempt:
The terminal Server has ended the connection.

CAUSE

A potential race condition between the Icaapi.dll and Rdpwsx.dll dynamic-link libraries (DLLs) may cause the private certificate key on the Terminal Services server not to be synchronized.

RESOLUTION

To have us fix this problem for you, go to the "Fix it for me" section. If you prefer to fix this problem yourself, go to the "Let me fix it myself" section.

Fix it for me



To fix this problem automatically, click the Fix it button or link. In the File Download dialog box, click Run, and then follow the steps in the Fix it Wizard.


Fix this problem
Microsoft Fix it 50643


Notes
  • This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
  • If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD, and then run it on the computer that has the problem.

Then, go to the "Did this fix the problem?" section.



Let me fix it myself

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows

To resolve this issue, follow these steps:
  1. Start Registry Editor.
  2. Locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TermService\Parameters
  3. Under this registry subkey, delete the following values:
    • Certificate
    • X509 Certificate
    • X509 Certificate ID
  4. Quit Registry Editor, and then restart the server.

Did this fix the problem?

  • Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support.
  • We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me" blog or send us an email message.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Properties

Article ID: 323497 - Last Review: March 28, 2011 - Revision: 7.0
APPLIES TO
  • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows XP Professional
  • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
  • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
  • Microsoft Windows Server 2003, Web Edition
Keywords: 
kbenv kbprb kbfixme kbmsifixme KB323497

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