Fix Error 0x80070780: File Cannot Be Accessed by System

Error 0x80070780 appears with the message “The file can’t be accessed by the system” when you try to copy, move, or delete a file in Windows. We tested the fixes on Windows 10 and Windows 11, and switching to an admin account resolved the error in many of our test cases.

#What Causes the “File Can’t Be Accessed” Error?

Error 0x80070780 shows up across Windows 7, 8, 10, and 11. In our testing, the cause traces back to one of four sources: a permissions block, system file corruption, a failing disk, or third-party software locking the file. Microsoft’s Windows troubleshooting guidance covers the update and file-access repair tools that address these causes.

The most common triggers:

• Permission blocks where your account doesn’t have admin rights to the file
• Corrupted system files that Windows needs to process the file operation
• Bad disk sectors on HDDs or failing SSDs that make file data unreadable
• Third-party software (antivirus, backup tools) locking the file

In our testing, permission issues were the most common cause, followed by corrupted system files and then disk errors.

#How Do You Fix Permission Issues for Error 0x80070780?

The simplest fix is making sure your account has administrator privileges. Standard user accounts can’t access certain system-protected files.

1. Open Settings (Windows key + I)
2. Go to Accounts > Family & other users
3. Select your account and click Change account type
4. Choose Administrator and click OK

We tested this on a Windows 10 PC where a standard user account couldn’t copy files from Program Files. After switching to Admin, the copy operation completed without issue. If you’re working in a server environment, check our guide on changing passwords on Windows Server 2012.

#Run SFC and DISM to Repair System Files

Corrupted Windows files can prevent normal file operations. The System File Checker (SFC) paired with DISM repairs these files. According to Microsoft’s sfc command documentation, sfc /scannow scans the integrity of all protected system files and replaces incorrect versions with correct copies from the cached store.

1. Right-click the Start button and select Terminal (Admin)
2. Type DISM.exe /Online /Cleanup-image /Restorehealth and press Enter
3. Wait for it to finish (takes about 5-10 minutes)
4. Type sfc /scannow and press Enter (takes 10-15 minutes)

In our testing, SFC found and repaired the corrupted files on a Windows 11 laptop that had been showing error 0x80070780 for over a week. After restarting, all file operations worked normally. If SFC itself throws an error like 0x80246007, you may need to reset Windows Update components first.

#Perform a Clean Boot

Third-party software (especially antivirus and backup tools) can lock files and trigger error 0x80070780. A clean boot starts Windows with only essential Microsoft services.

1. Press Windows key + R, type msconfig, and press Enter
2. Go to the Services tab and check Hide all Microsoft services
3. Click Disable all
4. Go to the Startup tab, click Open Task Manager, and disable all startup items
5. Restart your PC and test the file operation

If the error disappears in clean boot, re-enable services one at a time to find the culprit. We tested this on a PC where Norton 360 was locking backup files. Disabling Norton resolved the error immediately.

#Run CHKDSK to Fix Disk Errors

Bad sectors on your hard drive can make specific files inaccessible. CHKDSK scans the entire disk and repairs damaged areas. Microsoft’s chkdsk command reference states that the /r parameter locates bad sectors and recovers readable information, and includes the full functionality of /f.

1. Open Command Prompt as administrator
2. Type chkdsk C: /f /r and press Enter
3. Press Y to schedule the scan at next restart
4. Restart your PC (the scan runs before Windows loads)

CHKDSK with /r can take 30 minutes to 2 hours depending on drive size. In our testing on a 500 GB HDD, it found and fixed the bad sectors that were causing the 0x80070780 error. If CHKDSK doesn’t help, you may be dealing with hardware failure. Check our guide on what to do when your PC needs to be repaired.

#Enable Volume Shadow Copy

The Volume Shadow Copy service creates backup snapshots of files. If it’s disabled, some file operations fail with error 0x80070780.

1. Press Windows key + R, type services.msc, and press Enter
2. Find Volume Shadow Copy in the list
3. Double-click it, set Startup type to Automatic
4. Click Start if the service isn’t running, then click OK

According to Windows 10/11 update troubleshooting, volume Shadow Copy service failures are a known cause of file access errors in Windows 10 and 11.

#Clean Up System Restore Points

Old restore points can consume disk space and occasionally lock file resources. Cleaning them up frees space and can resolve access issues.

1. Type Disk Cleanup in the search bar and open it
2. Select your system drive (usually C:) and click OK
3. Click Clean up system files
4. Go to the More Options tab
5. Under System Restore and Shadow Copies, click Clean up

This freed up a large chunk of space on our test machine. While not a direct fix for 0x80070780, freeing disk space helps when the error is caused by resource constraints. For file-locking issues, see our guide on what to do when a file is open in system.

#Bottom Line

Start by switching to an admin account. That resolves the most common permission-related 0x80070780 errors. If permissions aren’t the problem, run DISM + SFC to fix corrupted files, then CHKDSK to check for bad disk sectors. A clean boot isolates third-party software conflicts.

For persistent errors on older hard drives, consider backing up your data and running a full CHKDSK /r scan overnight.

#Frequently Asked Questions