How to Fix Windows Backup Error Code 0x81000019

When you try to backup your files in Windows, you might see the error code 0x81000019. This error code means that the backup failed because the file was in use by another program. To fix this, you need to close the program that is using the file and try again.

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• Check if the backup destination is accessible and available
• Make sure that the Volume Shadow Copy service is running and set to Automatic
• Check the security settings of the backup destination
• Try creating a new backup job

1. Check if the backup destination is accessible and available

1. Check if the backup destination is accessible.
2. If the backup destination is not accessible, then try to connect to the backup destination using the Windows Remote Management (WSM) tool.
3. If the backup destination is accessible, then try to verify the backup.
4. If the backup verification fails, then try to fix the backup.

2. Make sure that the Volume Shadow Copy service is running and set to Automatic

1. Open the Services window by typing services.msc into the Start Menu search box and pressing Enter.
2. Locate the Volume Shadow Copy service in the list of services and double-click on it to open its properties window.
3. In the Volume Shadow Copy properties window, set the "Startup Type" to "Automatic" and then click on the "OK" button.
4. Restart the Volume Shadow Copy service if it is not already running.

3. Check the security settings of the backup destination

1. In the "Start" menu, click "Control Panel."
2. Under "System and Security," click "Windows Backup."
3. On the "Backup Settings" tab, click "Check security settings."
4. In the "Security Settings" dialog box, check the boxes next to the folders that you want to back up.
5. Click "OK."
6. On the "Backup" tab, click "Start backup."
7. On the "Backup Options" dialog box, click "OK."
8. If you want to back up the contents of the default Windows folder, click "Yes."
9. If you want to back up the contents of a specific folder, click "No."
10. Click "Start backup."
11. If the backup fails, click "Stop backup."
12. Check the Windows backup log file for errors.

4. Try creating a new backup job

1. On the Backup & Replication node in the vSphere Web Client, click Backup Jobs.
2. In the Backup Jobs pane, click New Job.
3. In the Job Details pane, specify the following information: a. Name: Windows Backup b. Location: N/A c. Schedule: Daily d. Backup Type: Full
4. In the Settings pane, specify the following information: a. Backup Schedule: Daily b. Backup Type: Full
5. Click the Advanced Settings button.
6. In the Advanced Settings pane, specify the following information: a. Backup Settings: -Source Folder: C:
   -Destination Folder: N/A -Copy Files: All Files
7. Click the Finish button.
8. In the Results pane, verify that the new backup job has been created and is currently running.

Still not working? maybe try one of these options:

1. Try using a different backup destination.
2. Check the Windows Event Viewer for any related error messages.
3. Try restarting the computer.
4. Try running the Windows Backup troubleshooter.
5. Contact Microsoft Support.