Troubleshoot:Backup failed. "Windows Backup failed while determining libraries location of one of the users included in backup" Error

Backup failed. "Windows Backup failed while determining libraries location of one of the users included in backup"

Original Title: Windows Backup did not complete successfully
Windows Backup failed while determining libaries location of one of the users included in backup.
Details: The device is not ready.

Anwsers to the Problem Backup failed. "Windows Backup failed while determining libraries location of one of the users included in backup"

Download SmartPCFixer to Fix It (Free)

What I found was causing this issue for me was my Optus wireless internet dongle.
It shows up in My Computer as a CD Drive.

Pulled out the wireless internet dongle and the backup finally started running.

Machine Throttling

• Click the Start button.
• In the Search box, type "regedit" (without quotes) and press Enter.
• Look for the following registry key: "HKEY_LOCAL_MACHINE\SOFTWARE\ Microsoft\ SQMClient\Windows\DisabledSessions".
• On the right window pane, delete the subkey: "Machine Throttling".
• Restart your computer.

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