Error 0x81000019 when you do a backup on Windows 7

SYMPTOMS   When you do a backup you get an error 0x81000019, the message is: “A shadow copy could not be created. Please check the ‘VSS’ and ‘SPP’ application event logs for more information. Details: Insufficient storage available to create either the shadow copy storage file or other shadow copy data. ”   CAUSE  …

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