Error 'Sequence contains more than one matching element' when backing up a W10

Hello. When trying to back up a new W10 it fails with this error:

The transfer of the backup of '(Volume Labeled 'HDBR_DRIVER'); (Volume Labeled 'HDBR_OS'); C:\; D:\; Recovery Partition 0 on disk 0; (Volume Labeled 'HDBR_OS'); (Volume Labeled 'HDBR_DRIVER')' on 'XXXXXX' failed

Transfer Failed Exception

The transfer failed: 'Sequence contains more than one matching element'

How to solve this?

Regards Andreas

  • Have you gotten any backups from this machine?

    I'd start with the basics like what is the version of RR core and what is the version of the agent installed? You need to make sure that the agent is the same or older than the core.

    Are there any errors in the C:\programdata\AppRecovery\Logs\AppRecoveryPM.log file on the agent? If so, what are they?

    Is this a physical machine? Does it have any disk encryption software running?

    What is the format and size of each of the volumes being backed up? Does it always fail on the same one?