Sitecore Identity Server: Sorry, There Was an Error
After restoring the upgraded database to the SQL, I tried to login into the Sitecore CMS. The identity server comes with an error " Sorry, there was an error " after successful login. I have checked the Identity server logs files and found the error: CORS policy execution failed . Solution: Go to the {root-directory}\project-identityserver.local\Config\production and open Sitecore.IdentityServer.Host.xml file and verify the database name. If it is corrects, then check the <AllowedCorsOrigins> section. In my case it was related to the database name, I forget to update the database name and connection string in the identity server. Note: Do not forget to recycle the Identity Server App pool. Happy Sitecoreing 😊