Event ID - 8276

Event Id8276
DescriptionSite folder could not be opened for duplicate message deletion on virtual machine <name>. The error number is <error code>.
Event InformationAccording to Microsoft:
This behavior occurs because the only instance of the Schedule+ Free/Busy system folders has been deleted or contains invalid data. The new Exchange 2000 or Exchange 2003 Server points to an incorrect Exchange Server computer as being the public folder server for the administrative group. Check for related events in the application log. If you use the ADSI Edit snap-in, the LDP utility, or any other LDAP version 3 client, and you incorrectly modify the attributes of Active Directory objects, you can cause serious problems. These problems may require you to reinstall Microsoft Windows 2000 Server, Microsoft Exchange 2000 Server, or both. Microsoft cannot guarantee that problems that occur if you incorrectly modify Active Directory object attributes can be solved. Modify these attributes at your own risk.
Reference LinksSchedule+ Free/Busy System Folder Is Missing

Exchange (MSExchangeFBPublish)

Catch threats immediately

We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.

See what we caught

Did this information help you to resolve the problem?

Yes: My problem was resolved.
No: The information was not helpful / Partially helpful.