There is TONS of errors that may crop up when you try to expand public folders in the Exchange System Manager (ESM). But I couldn't find much about MY error: c0072746
Exchange System ManagerI'm not really worried about the "error" - the public folders work FINE inside Outlook and OWA. My real concern was that I couldn't administrate the public folders through ESM - setting permissions and the like.
An existing connection was forcibly closed by the remote host.
ID no: c0072746
Exchange System Manager
FINALLY I found a tool that will let me administrate them with out using ESM - PFDAVAdmin
Download it here
Run the .exe to extract the contents to a folder called PFDAVAdmin
Double click PFDAVAdmin.exe to start the GUI
From here you can change permissions on all your public folders, and correct problems such as no owner being defined. Once I fixed all the permissions errors, ESM was again able to administer the public folders - PRAISE JESUS!