When using Windows 7 Backup (also available as part of Windows 8), you receive the following error message when trying to store the backup on a network location:
“The validation information class requested was invalid.”
Workaround (found in this forum post):
In the username field, specify the username as “DEVICE\username”, where DEVICE is the network device where you are trying to store the backups to.
PS: The German version of the error message is: “Die Überprüfungsinformationsklasse war unzulässig.”
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