Client host quota exceeded

Software

7.0 and higher

Error Message

Client host quota exceeded

Cause

A license must be present in the account for each device that is being backed up..
You will receive this message when more devices have been detected in the account than licenses have been purchased.

Solution

Licenses need to be added to the account or backup sets running on an old/wrong device need to be deleted.
Note: Data is unique per backup set so if you delete a backup set, you also delete the data!

It may also be that you are moving the backup account and in that case you need to take ownership of the backup set on the new computer.