IĀ found a solution that seems to works – Switch to multi-user mode (This is done from the File menu and follow the prompts) then switch back to -Single user mode..

Resolution for 'abu issue: 'Why does Automatic Backup fail and only creates a 12kb temp file when you “X” out of QB ?' available: Yes.

The abu issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the abu issue yourself by looking for a resolution described in the article. If it is a complex abu issue or you are unable to solve the issue, you may contact us by clicking here or by using other abu support options.

For more information about resolving issues related to abu in Quickbooks/QBO or to get support for the issue 'Why does Automatic Backup fail and only creates a 12kb temp file when you “X” out of QB ?', click the link below: