Knowledge Base

The following are the most frequent causes of this issue if it is related to the Source server:

• There is no mailbox enabled on the source administrator account
• The public folder database and mailbox are not visible to the source administrator account, despite the fact that it does have a mailbox enabled. Try migrating the administrator account mailbox to the same database or mailbox that contains the public folders.

Resolution:

Make that the source administrator account has a mailbox and that OWA mailbox can access the public folders that will be transferred.

The following are the most frequent causes of this issue if it is related to the Destination server:

• The primary hierarchy public folder mailbox was either not created at all or was created improperly.
• The primary hierarchy public folder mailbox was either not created at all or was created improperly.
• There is no default public folder mailbox configured to the primary hierarchy public folder mailbox in the administrator account mailbox used for the migration.

Resolution:

• Log in to Exchange Admin Center
• Navigate to 'Public folders' from the left panel

  

• Click '…'

  

• Select 'Root Permissions’

  

• Set the 'Owner' permission to the administrator account. Check the box for setting the permissions to subfolders. 'Save' the Permissions.

  

• Create a test public folder on the same page where the owner permissions were recently set. Make sure that the test folder inherits the Administrator account’s Owner Permissions
• Log out if you are currently logged in as the administrator account being used for the migration.
• Wait for a few minutes ( 30 to 60 minutes) and log into the OWA mailbox using administrator account and try to add the test folder as a Favorite.