![81223-ecp-500-unexpected-error.png] : /answers/storage/attachments/81223-ecp-500-unexpected-error.png
Hi @VirishKundoo-7700 ,
What's the version of your Exchange?
Any changes of Exchange have you did recently? And what about OWA, is it good or has a same error?
You may got this error after installing the Security Update and it's a known issue: OWA or ECP stops working after you install a security update
Or if it's not the case, consider removing ECP virtual directory and recreating it with:
Remove-ECPVirtualDirectory -Identity "Servername/ecp (Default Web Site)" New-ECPVirtualDirectory -InternalURL Https://servername.domain.com/ecp
Also check the certificate bindings both frontend and backend in IIS.
I removed the Windows-server-2012 tag cause it's irrelevant.
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