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Event id 36887, fatal alert received: 46 on Exchange 2010

Posted on 2015-02-23
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Last Modified: 2016-06-23
Hi, I am getting Schannel error repeatedly on my Exchange SP1 2008R2 Server.  Everything is working properly (webmail/ecp/activesync), but I get repeated Schannel event 36887 errors within my event logs.

These started following the installation of a new server certificate. Looking for a fix I have not yet found anything helpful online.

Thanks
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Question by:Luca Settimo
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Benjamin MOREAU earned 500 total points
ID: 40626685
This error is "TLS1_ALERT_CERTIFICATE_UNKNOWN (46)"

I think you have to search if all your certificates are OK.

If you couldn't found any solution and if it's not a problem; you can disable Schannel message :

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL]
"EventLogging"=dword:00000000
Value       Description
0x0000        Do not log
0x0001        Log error messages
0x0002        Log warnings
0x0004        Log informational and success events
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Author Comment

by:Luca Settimo
ID: 40626872
Thanks for your reply,

I think you may be on the right path with regards to the certificates. I will take a look at the Trusted Root Certification and delete any old unused Certificates. Failing this adding the EventLogging Regedit will be the only way forward.
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