Event ID - 1120

Event Id1120
SourceMSExchangeIS
DescriptionError non-database file or corrupted database initializing the Microsoft Exchange Server information store database.
Event InformationAccording to Microsoft:
CAUSE :

The information store being restored is not an Exchange Server 5.5 information store.
WORKAROUND :
To work around this problem, do one of the following:
Restore the information store from an online backup or an offline copy of an Exchange Server 5.5 information store.
-OR-
Restore the incorrect version information store to its proper environment by installing the version of Exchange Server that corresponds with the version of the offline copies of the Priv.edb and/or Pub.edb files.
Reference LinksErr. Msg.: Information Store Fails to Start with Server-Specific Error 4294966090

Veritas document

XADM: You May Be Unable to Start the Information Store and Event Messages May Be Displayed

XADM: Microsoft Exchange Server Information Store May Stop After a Successful Restoration Operation

XADM: Error 4294966090 When Starting Information Store

XADM: Information Store Does Not Start with Service Specific Error 4294966264

XADM: Information Store Does Not Start After an Offline Defragmentation With 4294966277

XADM: Information Store Fails to Start: 4294965882, FFFFFA7A, Event 177, 1081, and Others

XADM: Error 1120 and 5000 Occurs When Starting Information Store

XADM: Err. Msg.: Information Store Fails to Start with Server-Specific Error 4294966090

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