An error as below is displayed when backing up a virtual machine:

[Inner Exception Message]: This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.


This is a known issue if FIPS policies are enabled on the machine running Altaro VM Backup.


To solve this issue, perform the following 2 steps to disable FIPS policies on the machine running Altaro VM Backup:

  1. Go to [Control Panel] > [Administrative Tools] > [Local Security Policy]

    DISABLE the setting for "System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing" as shown below:

    Note: Ensure this is disabled on both the local and the group policy if you have one applied.

  2. Open the registry editor and set the following key to a value of '0':


    Then reboot the machine to affect the registry changes, and attempt the backup again, this should be successful.