On one of our latest Exchange 2013 installation Outlook and OWA search wasn’t working, we also noticed the following event id on the exchange server
Log Name: Application Source: MSExchangeFastSearch
Date: 11/07/2014 11:38:12 PM Event ID: 1010
Task Category: General Level: Warning
FAST endpoint experienced an exception. This operation may be retried. Error details: An Exception was received during a FAST operation. —>
System.ServiceModel.FaultException: error CS1548: Cryptographic failure while signing assembly ‘c:\Windows\Temp\uooxq03v.i3z\Microsoft.Exchange.Search.Writer.12.26.dll
‘ — ‘Error signing assembly — Unknown error (8013141c)’
After trying a few thing we executed Get-MailboxDatabaseCopyStatus cmdlet to find that the Content Index state is Unknown, to resolve the issue we added full access permission for Administrators,Exchange Servers,Exchange Trusted Subsystems accounts on the following location.
C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys
Rebooted the exchange server to resolve the issue.
Feel free to report any new issue on our forum to seek expert help.
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