Event ID - 8003

Event Id8003
SourceNTBackup
DescriptionEnd Restore to Server_name\Microsoft Information Store\First Storage Group Verify: Off
Event InformationAs per Microsoft :
CAUSE
This issue can occur if the database is not dismounted and if the option to enable the database to be overwritten by a restore operation has not been enabled on this database before you run NTBackup.
RESOLUTION
To resolve this issue, use the following procedure before you run NTBackup:
1. Start Exchange System Manager, right-click the database that you want to restore, and then click Dismount Store.
2. When you are asked if you want to dismount the store and disconnect any users, click Yes.
3. Right-click the store again, and then click Properties.
4. Click the Database tab, and then click to select the This database can be overwritten check box.
Reference LinksEvent ID 8003 Messages Are Logged When You Restore a Database from Backup

Ntbackup is not successful and event 904 error 0xC7FE1F42 is logged

XADM: Windows 2000 Backup Does Not Dismount Databases During the Restore Process

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.