Event ID - 1021

Event Id1021
DescriptionDOMAIN/USERNAME was unable to connect as /o=Organization/ou=OrgUnit/cn=Exchange/cn=User Alias. Error <error code>
Event InformationError codes: - 0x3f2 - An error reading the hard disk. This issue can occur when you do not have the correct NTFS file system permissions on the Exchsrvr folder on the Exchange Server computer. See Q249892. - 0x80040111 - MAPI_E_LOGON_FAILED = An unsuccessful logon attempt when you query the directory. Q278966 might help? Links Q249892,

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.