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Thread: Schannel error on Windows 7 Pro

  1. #1
    Join Date
    Sep 2009
    Posts
    87

    Schannel error on Windows 7 Pro

    Just few days back i had bought a new Dell Latitude laptop. i had installed Windows 7 Pro as my operating system on it. Now the problem is that after installing Windows 7 Pro on my Dell Latitude laptop, i get the following error message in my System Event Log:
    Source: Schannel
    Event ID: 36888
    Level: error
    User: SYSTEM
    Task Category: none
    Can any one tell me that why i'm getting Schannel error on Windows 7 Pro? Does any body knows about it? What i need to do in order to get rid of the above issue? Any help you can provide would be greatly appreciated. Thanks in advance.

  2. #2
    Join Date
    Jan 2006
    Posts
    3,798

    Re: Schannel error on Windows 7 Pro

    This behavior is caused by the SMTP service processing an incoming EHLO command if no certificate is assigned to an SMTP site. When you enable Schannel event logging on a computer that is running any Microsoft Windows NT Server 4.0, or Microsoft Windows 2000 Server, or Microsoft Windows XP Professional, detailed information from Schannel events can be written to the Event Viewer logs, in particular the System event log.

  3. #3
    Join Date
    May 2008
    Posts
    2,945

    Re: Schannel error on Windows 7 Pro

    This error usually indicates that your computer cannot complete the trust chain on the certificate that you are using for schannel. Check to see whether the certification services are running on the server, if yes, either disable the service or uninstall the Certificate server component. Use "dsstore -dcmon" and look at a verbose display. Correct the trust chain on the certificate that you are using for schannel.

  4. #4
    Join Date
    Feb 2008
    Posts
    2,638

    Re: Schannel error on Windows 7 Pro

    I solved the problem by granting NETWORK SERVICE the same permissions on =Machinekeys folder as to SYSTEM. Opened up MMC and loaded the Certificates Store for theLocal Computer (while on the Domain Controller), I found the Certificate I was having troubles with and right clicked on it, went to All Tasks and then "Renew with Citrix XTE service is run under the NETWORK SERVICE account and it was = not accepting SSL relayed connections. Now all is fine. Same Key". This put the private key back into the certificate.

  5. #5
    Join Date
    Apr 2008
    Posts
    3,341

    Re: Schannel error on Windows 7 Pro

    Your software needs write permission of that Temporary folder. This event is logged when a server application (for example, Active Directory) attempts to perform a Secure Sockets Layer (SSL) connection, but no server certificate is found. To provide write permission to NT Authority\Network Services account for your "Temporary ASP.Net Files" folder, Simple right click on that folder -> select Security tab -> Click Add -> Click Advance button -> Click Find Now button -> Select NT Authority\Network Services from the list -> Click Ok -> Click Ok again -> select Allow write -> Click Ok.

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