Env: SharePoint 2016 on-prem
I have 3 content database under 1 Web Application. there is 1 content database (have 6 site collections) suddenly became "Access Denied" including sites collection administrator account but all 2 other content database is working fine...
HOWEVER, if add "Everyone" with "Full Read" in "User Policy" under" Manage web applications" all user can access anywhere in the 1 content database (have 6 site collections) .
All Database are in working mode, not "Error or Read-only" Please help