DC restore or sure backup fails due to shadow copy expiration

KB ID: 2226
Product: Veeam Backup & Replication
Version: Version: 7.x, 8.x, 9.x
Published:
Last Modified: 2017-01-18

Challenge

DC restore results in DSRM boot and event id 1918 from ActiveDirectory_DomainService stating:  

The shadow copy service cannot restore Active Directory Domain Services because the shadow copy used is too old.

Cause

The backup of the DC is older than the tombstone period. 
Active Directory protects itself from restoring data older than the tombstone lifetime (180 days) by disallowing the restore. As a result, the useful life of a backup is equivalent to the tombstone lifetime setting for the enterprise. Reference: https://technet.microsoft.com/en-us/library/bb727048.aspx  

Thus Veeam does not support restore from such backups either.
 

Solution

Restore or run sure backup from the backups which were created within the tombstone period.

Setting the time on the DC before the shadow copy expiration date may be a solution for the a single DC restore scenario, but if it is not a single DC, even if the replication starts, there can be a situation when the object remains present only on the restored domain controller, resulting in inconsistent data. So it is not advisable to perform that in case the DC you are restoring is not a single one. 

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