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Hello, we have 4 Exchange Server 2013 and 2 Exchange Server 2016 in our organization. A few days after patching all the servers with July security updates, the OWA and ECP stopped working. We did reboot the servers after the patching and OWA & ECP was still working, issue started 5 days after.
Error message is "HTTP 500 Could not load file or assembly Microsoft.Exchange.Common, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified". This happens on all the servers (2013 and 2016). So far, after checking the Internet, we did the following actions without success:
Nothing is working, and we are a little bit lost.
Event ID 1310 is popping regularly in the Event Viewer of all the Exchange Servers with the same message as the error we have when we tried to connect to the ECP...
Any ideas ?
Thanks
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-Follow the steps to check the BinSearchFolder configuration
-Execute UpdateCas.ps1 and UpdateConfig.ps1
According to the resolution provided in this offical document, it's required to run IISreset and restart the server after running the scripts: .\UpdateCas.ps1 and .\UpdateConfigFiles.ps1. So if this hasn't been done earlier, it's suggested to follow all the steps in the article and see if there would be any improvement.
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Hi @Mickael Kane ,
I am writing to see how everything is going on with this thread. Are you able to access OWA and ECP now?
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