Event ID - 1002

Event Id1002
DescriptionMetabase Update agent failed to start. Error code is 80090006 (Invalid Signature).
Event InformationAccording to Microsoft:
This issue may occur if there is corruption of the Microsoft Internet Information Services (IIS) metabase on the Exchange 2000 Server computer. Corruption of the IIS metabase may occur for a variety of reasons, including the following:
1.The SystemRoot\System32\Inetsrv folder was scanned by an antivirus agent.
2.The Exchange 2000 Server computer is affected by hardware issues.
3.The Exchange 2000 Server computer was affected by a power outage.
Method 1: Restore the Metabase.bin file from backup
Method 2: Reinstall IIS and Exchange 2000.
Reference LinksYou receive error code 80090006 when the Exchange System Attendant service tries to start

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