Virtual Vault empty, folders/mails disappearing at my users
I am having many issues with Enterprise Vault at end users, all with the same problem. It started on 20th December where the first users reported his Virtual Vault in Outlook is completely empty. A reset does not help. Sometimes folder come back for a week, then disappear again. Problem exists at all plugin versions tried.
By today it seems more and more users are having this issue. As we did not change anything on our structure and the Vault server was running for 2 years now without issues, I wonder if there might be Windows Updates deployed causing that issue ?
So my queastion to the community, is anyone facing the same ? I have several tickets with Symantec Support open but until today we have not been able to solve this issue.