open cli and input this command: Get-MailboxDatabaseCopyStatus *|sortname|Selectname,status,contentindexstate stop these services: Stop-Service MSExchangeFastSearch Stop-Service HostControllerService locate the path of the db : Get-MailboxDatabase Get-MailboxDatabaseDB01\SRVCOM |selectEdbFilePath delete the GUID folder : now restart the services start-Service MSExchangeFastSearch start-Service HostControllerService and issue this command Get-MailboxDatabaseCopyStatus * | sort name | Select name,status,contentindexstate As you see, the indexing process is …