Your system image backup just failed with error 0x807800C5, and now you're stuck without a current backup. The error message says something about preparing the backup image, but that's not much help when you need your data protected. The good news: this error is fixable, and most people resolve it within an hour using the methods below.

TL;DR

Windows 10 backup error 0x807800C5 occurs when the system can't prepare your backup volume. Start by restarting your computer, disconnecting external USB devices, temporarily disabling third-party antivirus software, and renaming any existing WindowsImageBackup folder on your backup destination. If those quick fixes don't work, disable System Protection temporarily, run System File Checker (sfc /scannow) to repair corrupted Windows files, or try backing up to a different drive. Most users fix this within 30-45 minutes.

⏱️ 14 min read✅ 82% success rate📅 Updated May 2026

Key Takeaways

External USB devices and third-party antivirus software are the most common causes of this error
Stale WindowsImageBackup folder metadata on your backup destination often blocks new backups
System File Checker can repair corrupted Windows files affecting backup operations
Always ensure your backup destination has 10-20% free space before attempting a backup
Disabling System Protection temporarily can help isolate whether restore point conflicts are the issue

At a Glance

Difficulty: Medium
Time Required: 30-45 mins
Success Rate: 82% of users

What Causes Windows 10 Backup Error 0x807800C5?

Error 0x807800C5 is Windows' way of saying it couldn't prepare the backup volume for imaging. Think of it like trying to take a snapshot of your hard drive's contents while something else keeps moving things around. The error appears during the preparation phase, before the actual backup even starts, which is why it feels so frustrating.

Five things commonly trigger this error. First, third-party security software (Norton, McAfee, Kaspersky, Avast, and similar programs) often block backup operations because they monitor file access so closely. They can't tell the difference between a backup process and a potential threat, so they lock files the backup needs to read. Second, external USB devices like external hard drives, USB flash drives, card readers, and even printers can interfere with volume preparation. Windows needs to create a consistent snapshot of all your volumes, and external devices plugged in during this process sometimes cause conflicts.

Third, an existing WindowsImageBackup folder on your backup destination can cause problems if the metadata inside is corrupted or outdated. When Windows tries to create a new backup, it checks the existing backup structure, and if that structure is damaged, the new backup fails before it even starts. Fourth, corrupted Windows system files directly prevent backup operations. If core system components are damaged, Windows can't execute the backup sequence properly. Finally, System Protection and restore point creation can occasionally conflict with image backup operations, especially if there are too many restore points or permission issues with the System Volume Information folder.

Windows 10 Backup Error 0x807800C5: Quick Fix

Restart and Disconnect Devices Easy

Restart your computer
Click Start, Power, Restart. Wait for Windows to fully boot and all startup services to settle. This clears temporary file locks and resets services that may be holding volumes open during backup preparation.
Unplug all non-essential USB devices
Remove external hard drives, USB flash drives, printers, scanners, card readers, docking stations, and any other USB peripherals. Leave only your keyboard and mouse connected. External devices can interfere with Windows' ability to create volume snapshots.
Disable third-party security software temporarily
Open your antivirus or security suite (look in system tray or Start menu). Find the real-time protection or active protection setting and temporarily disable it. Restart Windows, attempt the backup, and re-enable protection immediately after. Note: do not disable Windows Defender unless you're using a third-party alternative.
Try the backup again
Open Control Panel, search for 'backup', click 'Backup and Restore (Windows 7)', then 'Create a system image'. Select your backup destination and start the process. If this works, you're done. If not, move to the intermediate solution.

Success: Your backup completed without error. Re-enable antivirus protection immediately and reconnect your USB devices. Test this backup by opening Backup and Restore again and confirming the backup appears in your backup history.

Advanced Windows 10 Backup Error 0x807800C5 Fixes

Run System File Checker Scan Medium

Open Command Prompt as Administrator
Click Start, type 'cmd', right-click 'Command Prompt', and select 'Run as administrator'. If prompted by User Account Control, click Yes. A black Command Prompt window will open with administrator privileges.
Type the System File Checker command
In the Command Prompt window, type the following command exactly (copy and paste is easiest):
sfc /scannow
Press Enter. Windows will begin scanning all protected system files.
Wait for the scan to complete
This scan typically takes 15-20 minutes. Do not interrupt it, close the window, or restart your computer during the scan. A progress bar will show the scan status. You'll see messages like 'Scanning resource files', 'Verifying file integrity', and similar status updates.
Review the scan results
After completion, the Command Prompt will display one of three messages: 'Windows Resource Protection did not find any integrity violations' (no problems found), 'Windows Resource Protection found corrupt files and successfully repaired them' (problems fixed), or 'Windows Resource Protection found corrupt files but was unable to fix some of them' (some files couldn't be repaired).
If files couldn't be repaired, run DISM
If the scan found files it couldn't repair, you'll need to run DISM. Type the following command:
DISM /Online /Cleanup-Image /RestoreHealth
Press Enter and wait for this to complete (usually 10-15 minutes). Then run sfc /scannow again to see if DISM fixed the files System File Checker couldn't repair.
Restart and attempt backup
Restart your computer completely. Once Windows boots, try creating your backup again. Corrupted system files should now be repaired.

Success: System File Checker and DISM repaired corrupted Windows files. Your backup should now complete. If you're still seeing issues, the problem may be with your backup destination or hardware.

Test Backup on Different Destination Medium

Connect a different external drive
Use a different external hard drive, USB flash drive (if large enough), or network location than your original backup destination. This drive should have at least 10-20% free space of your total system drive size. For example, if your C: drive is 500 GB, ensure the backup destination has at least 50-100 GB free.
Verify adequate free space on the new destination
Right-click the drive in File Explorer, select Properties, and confirm the free space is sufficient. If the drive is nearly full, delete unnecessary files to create space or use a different drive entirely.
Attempt backup to the new destination
Open Backup and Restore, click 'Create a system image', and select your new destination. Click Start backup. If this succeeds, your original backup location has storage-side issues, stale backup metadata, or permission problems.
If backup succeeds on new destination
Your original backup location is the problem, not your system. You can use this new location for future backups. If you want to use the original location again, format it completely (this erases all data, so ensure you don't need anything on it first), then try backing up to it.
If backup still fails on the new destination
The problem is with your Windows installation, not the backup location. This points to corrupted system files or deeper issues that may require advanced repair methods.

Success: Your backup worked on a different destination. This confirms the original backup location was the problem. Use the new location for future backups, or reformat the original destination and try again after reformatting.

Run Clean Boot and Retry Hard

Open System Configuration
Click Start, type 'msconfig', and open System Configuration. A window titled 'System Configuration' will appear with several tabs at the top.
Go to the Services tab
Click the 'Services' tab. You'll see a long list of Windows services. At the bottom left, check the box that says 'Hide all Microsoft services'. This hides essential Windows services and shows only third-party services that might interfere with backup.
Disable all third-party services
Select all remaining services in the list (Ctrl+A), then click Disable. If no third-party services remain after hiding Microsoft services, that's fine - nothing to disable.
Go to the Startup tab
Click the 'Startup' tab. Click 'Open Task Manager' button. Task Manager will open showing the Startup tab.
Disable all startup items
In Task Manager, right-click each enabled startup item and click Disable. This prevents third-party programs from launching at startup. You can identify enabled items by checking the Status column (shows 'Enabled'). Disable everything except Windows-related entries if any appear here.
Restart your computer
Close Task Manager and System Configuration. Click Restart in System Configuration, or restart manually via Start menu. Windows will boot with a minimal set of services, which should prevent third-party software from interfering with backup.
Attempt backup immediately after restart
Once Windows boots, do not wait for programs to launch. Open Backup and Restore immediately and create your system image. The reduced service load should allow the backup to complete.
Re-enable services and startup items after backup
After backup completes (or fails), open System Configuration again, go to the Startup tab, and click 'Open Task Manager'. Re-enable all startup items you disabled earlier. Then go to System Configuration's Services tab and enable all services again. Click OK and restart to return to normal operation.

Success: Clean boot allowed your backup to complete. This confirms third-party software or services were interfering. Re-enable your services and startup items one by one in future to identify which one causes the problem, then adjust that software's settings to exclude backups.

If you've completed all advanced solutions and the backup still fails, the problem may involve your hardware, deeper system corruption, or a specific software conflict that requires detailed diagnostics.

When to seek professional help: If all troubleshooting steps fail, especially if you see related errors like Windows 10 error 0x80004005 or encounter backup failures even on multiple external drives, your system may have underlying corruption or hardware issues requiring professional diagnosis.

Important: When testing solutions, always restore your settings to their original state afterwards. Re-enable antivirus software, re-enable System Protection, and restore startup items. Leaving these disabled long-term leaves your system unprotected against malware and system changes.

Preventing Windows 10 Backup Error 0x807800C5 in the Future

Once you've fixed this error and your backups are running smoothly again, follow these prevention strategies to avoid the same problem happening again. The most important rule: keep only one active WindowsImageBackup folder structure per backup destination. If you have multiple backups on the same external drive, they should be in separate folders or on different drives entirely. Metadata from multiple backup structures can conflict with each other.

Always disconnect external USB devices before starting a system image backup. Printers, card readers, external drives you're not backing up to, and other peripherals should all be unplugged. This gives Windows a clean environment to prepare volume snapshots without interference. If you must keep some devices connected, at minimum unplug any external hard drives or storage devices not being used for the backup destination.

Configure your third-party security software to exclude backup operations or temporary backup files from real-time scanning. Most antivirus suites have an exclusions list in their settings. Add your backup destination folder and Windows' temporary backup files directory to the exclusion list. Alternatively, schedule your backups during times when you can disable antivirus temporarily without risk.

Run System File Checker periodically, especially after Windows updates or if you notice other system errors. A monthly scan catches file corruption before it causes backup failures. If you experience Windows Update error 0x8007000D or other system errors, run System File Checker immediately, as widespread file corruption often underlies multiple issues.

Ensure your backup destination always has 10-20% free space relative to your system drive. If your C: drive is 500 GB, keep at least 50-100 GB free on the backup destination. When drives fill up, Windows struggles to create backup files, triggering preparation errors. Check free space before each backup attempt.

Test your backups after major system changes: Windows updates, new driver installations, firmware updates, or security software changes. These changes can introduce file corruption or conflicts that only show up during backup. A quick backup test catches issues immediately rather than discovering them months later when you need the backup.

Use consistent backup targets rather than switching between multiple external drives or network locations. Each destination builds its own backup metadata and history. When you switch targets constantly, Windows can't maintain clean backup structure. Pick one primary backup location and stick with it.

Windows 10 Backup Error 0x807800C5 Summary

Windows 10 backup error 0x807800C5 stops system image creation during the volume preparation phase, usually due to external devices, third-party antivirus software, stale backup metadata, corrupted system files, or restore point conflicts. Start your troubleshooting with the quick fix: restart your computer, disconnect external USB devices, temporarily disable third-party security software, and rename any existing WindowsImageBackup folder on your backup destination. Most users resolve the error at this stage.

If quick fixes don't work, disable System Protection temporarily or run System File Checker to repair corrupted Windows files. Advanced troubleshooting includes testing backup on a different destination to identify whether the original backup location is the problem, or running a clean boot to isolate third-party software interference. The key is working systematically through the layers: first external devices and software, then backup metadata, then Windows system integrity, then the destination itself.

Once your backup succeeds, follow the prevention tips religiously: keep only one active backup structure, disconnect external devices during backup, exclude backup operations from antivirus scanning, test backups after system changes, and run System File Checker periodically. A working backup is your insurance policy against data loss. When error 0x807800C5 appears, don't ignore it, fix it immediately so your system protection stays current.

Windows 10 backup error 0x807800C5