Exchange ECP and OWA error after update
After upgrading Exchange server to the latest patch or CU, you found the error page after login to ECP or OWA. OWA will be showing a login screen that says ‘bad request’ after entering credentials and ECP will be showing “Could not load file or assembly ‘Microsoft.Exchange.Common, Version=15.0.0.0 …” Resolution 1. Open IIS Manager. Expand … Read more