Hello Harry,
Which version of Exchange are you using?
a. Open Outlook with the Administrator-level account used to manage Microsoft Exchange Public Folders
b. Expand "Public Folders" and highlight the public folder that needs to be configured
c. Right-click on the Public Folder and select the Properties | Permissions tab
d. Highlight the account that is used to perform the backups of the Public Folders in the top pane
e. Under Permissions, use the Roles drop-down box to select the "Owner" role
and click OK
Please update us on the issue.
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