Windows Backup error 0x80070020 MasterFileStatus.db

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The Windows Backup error with code 0x80070020 typically indicates that there is a conflict or issue with the Master File Status database (MasterFileStatus.db). This database is used by Windows Backup to keep track of the backup files and their status.

To resolve the 0x80070020 error related to the Master File Status database, you can try the following steps:

  1. Restart the "Block Level Backup Engine Service": This service is responsible for maintaining the Master File Status database. Restarting the service may resolve any conflicts or issues.

    • Press Win + R to open the Run dialog box.
    • Type services.msc and press Enter to open the Services window.
    • Scroll down and locate the "Block Level Backup Engine Service".
    • Right-click on the service and select "Restart".

  2. Delete the Master File Status database: If restarting the service doesn't resolve the issue, you can try deleting the Master File Status database. Windows will automatically recreate it when needed.

    • Open File Explorer and navigate to the following folder: C:\Windows\Globalization\Metadata\
    • Locate the file named MasterFileStatus.db.
    • Delete the MasterFileStatus.db file.
    • Restart your computer.

  3. Run Windows Backup Troubleshooter: If the error persists, you can use the built-in Windows Backup Troubleshooter to identify and resolve any issues with the backup functionality.

    • Open the Control Panel.
    • Search for "Troubleshoot" and click on "Troubleshooting".
    • Under "System and Security", click on "Fix problems with Windows Backup".
    • Follow the on-screen instructions to complete the troubleshooting process.

  4. Disable third-party security software: In some cases, third-party security software or antivirus programs can interfere with the Windows Backup process. Temporarily disabling or adjusting the settings of such software can help resolve the issue. Consult the documentation or support resources of your security software for instructions.

If none of the above steps resolve the error, you may need to further investigate the issue or consider using alternative backup solutions. Additionally, ensure that your system is up to date with the latest Windows updates and that you have sufficient free disk space for the backup operation.