Microsoft

Accessing Exchange Server 2019 /OWA and /ECP throws the errors: “Status code: 500” and “Could not load file or assembly ‘Microsoft.Exchange.Common, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies.”

Problem You’ve noticed that after patching Exchange Server 2019 servers (for this example, the patch for HAFNIUM was applied), access to /OWA and /ECP now displays the following errors: OWA 🙁 Something went wrong Your

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