Exchange Server

Copper Contributor

I'm a C# developer and I'm working on App for Exchange Server to backup and restore Mailboxes.

My application was working good till last week. I ran the windows update then my app stopped working completely.


I'm getting below the Error while retrieving mailboxes:


Error: The syntax is not supported by this runspace. This can occur if the runspace is in no-language mode.


I checked the forum and it says the error because of the "April 2021 security updates"


Do I need to make any code change or machine level configuration changes?


Please help me


Thanks in advance

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