SharePoint PowerShell Error: Cannot open database “Database-Name” requested by the login. The login failed. Login failed for user ‘Domain\UserName’.
Problem: SharePoint Admin tried backing up a SharePoint 2013 site collection with Backup-SPSite PowerShell cmdlet and got an error “Cannot open database “WSS_Content_demo” requested by the login. The login failed. Login failed for user ‘Domain\User’.” Root cause: Although the SharePoint administrator is granted permission with the “Add-SPShellAdmin” cmdlet, it grants permission to…
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