Unable to apply permissions on public folders with Exchange 2016 CU8

Problem

You use Folder Permissions Manager to apply permissions on public folders on Exchange 2016 CU8, but the permissions are not actually being applied.

Reason

This is a known issue with Exchange 2016 CU8.

Permissions are correctly applied by Folder Permissions Manager using Exchange Web Services (EWS), but Exchange 2016 CU8 does not actually apply the permissions.

Solution

Upgrade Exchange 2016 to Exchange 2016 CU9 or newer.

Applies to

Folder Permissions Manager, version 8 and later.