Sometimes, during backup and restore, access right for “ALL” is corrupted.
There is two method to solve this.

Method 1
For advance user, use database desktop to alter PRIORITY.DB. Make sure that there is a priority with the name “All”.

Method 2
Copy Priority.* from originalDB folder to E.WIN folder. This method doesn’t work if the Priority.* in originalDB folder is not correct. This happen to certain version of E.WIN.