Fix 0x80042306 System Restore Error in Windows 11

This guide walks you through resolving the 0x80042306 error that appears when you try to create a restore point or run System Restore on Windows 11. The error usually indicates that the Volume Shadow Copy (VSS) service cannot allocate enough space for the snapshot. The fixes below address the most common causes, from freeing up disk space to resetting the VSS service.

What You’ll Need

• Administrator access to your Windows 11 PC
• At least 5–10 GB of free space on the drive where System Protection is enabled (recommended)
• A few minutes to run commands in an elevated Command Prompt or PowerShell

Step-by-Step

1. Free up disk space on the system drive. The most common cause of 0x80042306 is insufficient free space. Open Settings > System > Storage, and check how much space is available on your C: drive. Delete temporary files, clear the Recycle Bin, or move large files to another drive until you have at least 5 GB free. If you have less than 1 GB free, the error will almost certainly appear.
2. Increase the max usage for System Protection. Right-click the Start button and select System. Click System Protection on the right (or search for “Create a restore point” in the Start menu). In the System Properties window, select your system drive (usually C:) and click Configure. Under Disk Space Usage, move the slider to a higher value (e.g., 5% or more). Click Apply and OK.
3. Delete old restore points. In the same System Protection tab, click Configure and then click the Delete button to remove all existing restore points. This can free up space and clear any corrupted shadow copies.
4. Run the Volume Shadow Copy service check. Press Win + R, type services.msc, and press Enter. Scroll down to Volume Shadow Copy. Right-click it and select Restart. Also check that its Startup Type is set to Manual (the default). If the service fails to start, note the error and proceed to the next step.
5. Run System File Checker and DISM. Open Command Prompt as administrator (right-click Start > Terminal (Admin) or Command Prompt (Admin)). Run sfc /scannow and wait for it to finish. Then run DISM /Online /Cleanup-Image /RestoreHealth. Restart your PC after both complete.
6. Reset the VSS service and shadow copy storage. In the same admin Command Prompt, run the following commands one by one, pressing Enter after each:

   net stop vss
   net stop swprv
   vssadmin delete shadows /for=C: /quiet
   net start swprv
   net start vss

   This stops the VSS services, deletes all existing shadow copies on C:, and restarts the services. Be aware this removes all restore points.

7. Disable and re-enable System Protection. Go back to System Protection (as in step 2), select your system drive, click Configure, and choose Disable system protection. Click Apply, then re-enable it by selecting Enable system protection and setting the max usage again.
8. Check for third-party backup or disk tools. Some disk imaging or antivirus software can interfere with VSS. Temporarily disable any such software (e.g., Acronis, Macrium, or certain antivirus suites) and try creating a restore point again. If it works, add the System Restore process to the software’s exclusion list.
9. Perform a clean boot. If the error persists, a background service might be locking VSS. Press Win + R, type msconfig, and go to the Services tab. Check Hide all Microsoft services, then click Disable all. Go to the Startup tab and click Open Task Manager, disable all startup items, then restart. Try System Restore again. After testing, re-enable everything by reversing these steps.

Common Mistakes

• Not freeing enough space. Even if you have 2 GB free, VSS may still fail. Aim for at least 5 GB, and more if you have many restore points.
• Running commands without admin rights. The commands in steps 5–6 must be run in an elevated prompt. If you see “Access denied,” you are not running as administrator.
• Skipping the DISM scan. SFC alone may not fix corrupted system files that affect VSS. DISM is often necessary.
• Deleting restore points without understanding the consequence. You lose all previous restore points. That is fine if you are trying to fix the error, but do not do it if you need an old restore point.
• Assuming the error is only about disk space. While space is the top cause, VSS service corruption or third-party conflicts can also produce 0x80042306. Follow all steps in order.

Tips

• Regularly clean up temporary files using the built-in Storage Sense (Settings > System > Storage > Storage Sense) to avoid running out of space.
• Set a reasonable max usage for System Protection (e.g., 5–10% of your drive) so you have enough room for snapshots without filling the disk.
• Create restore points manually before major system changes (driver installs, Windows updates) so you have a fallback.
• If you use an external drive for backup, consider enabling System Protection on that drive as well—but note that VSS on external drives can be less reliable.

Troubleshooting

If you have followed all steps and the error still appears, try these additional checks:

• Check the System Event Log. Open Event Viewer (search for it in Start), go to Windows Logs > System, and look for errors from VolSnap or VSS around the time of the failure. The details can point to the exact cause.
• Verify the VSS service dependencies. In services.msc, double-click Volume Shadow Copy and go to the Dependencies tab. Ensure all listed services (like Remote Procedure Call (RPC)) are running.
• Run a disk check. Open an admin Command Prompt and run chkdsk C: /f. You will need to restart your PC. This repairs file system errors that might interfere with VSS.
• Use the System Restore from Safe Mode. Boot into Safe Mode (hold Shift while clicking Restart, then choose Troubleshoot > Advanced Options > Startup Settings > Restart, then press 4). Try creating a restore point there. If it works, a background service is the culprit.
• Consider a repair install. If nothing works, you can do an in-place upgrade using the Windows 11 Installation Assistant or ISO. This reinstalls Windows while keeping your files and apps, and often fixes persistent system corruption.

Frequently Asked Questions

What does error 0x80042306 mean?

It means Windows could not create a shadow copy (a snapshot) of your drive. The Volume Shadow Copy service either ran out of space or encountered a problem.

Will I lose my files if I delete restore points?

No, deleting restore points only removes the saved system snapshots. Your personal files remain untouched.

Why does the error happen even when I have free space?

VSS requires a contiguous block of free space and may be blocked by system file corruption, a full pagefile, or third-party software that locks the volume.

Can I use System Restore if I have no restore points?

No, System Restore needs at least one restore point to work. If you have none, you cannot roll back to an earlier state.

Is it safe to run vssadmin delete shadows?

Yes, it only deletes shadow copies (restore points). It does not affect your personal files or installed programs.

How long does the fix take?

Most steps take just a few minutes. Running SFC and DISM can take 20–30 minutes depending on your system speed.

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