All in a sudden everyone on the domain cannot open the public folder with the following error message:
Cannot expand the folder. The set of folders cannot be opened. Microsoft Exchange is not available. Either there are network problems or the Exchange server is down for maintenance
Outlook client background:
Cannot display the folder. Microsoft Outlook cannot access the specified folder location.
There were no maintenance or update being applied in the past months on the following Exchange Servers:
PRODHT-CAS01 (HT-CAS Server NLB node 1)
PRODHT-CAS02 (HT-CAS Server NLB node 2)
PRODMBX01 (Stand alone Mailbox Server 1) no DAG
PRODMBX02 (Stand alone Mailbox Server 2) no DAG
the work around was to restart the Microsoft Exchange RPC Client Access
service on PRODMBX01 mailbox Server that I took to resume access to the Public Folder.
the question is why do I have to do this all in a sudden ? what may have caused it ?