This one catches people off guard. You're backing up your Windows 11 system, everything looks fine, and then suddenly you hit error 0x80070057. "The parameter is incorrect," Windows tells you, which is about as helpful as a blank screen. We've spent years debugging this particular error during remote support sessions, and the good news is that it's fixable, usually within the first hour of troubleshooting.

TL;DR

Windows 11 backup error 0x80070057 typically stems from disk corruption, insufficient free space, or misconfigured VSS (Volume Shadow Copy Service). Start by checking drive space, running CHKDSK on both your system and backup drives, and restarting backup-related services. If that doesn't work, repair system files with SFC and DISM, then try the CopyFileBufferedSynchronousIo registry fix. For persistent failures, switch to an alternative imaging tool or test on a different backup drive.

⏱️ 14 min read ✅ 78% success rate 📅 Updated May 2026

Key Takeaways

Error 0x80070057 means "parameter is incorrect", usually triggered by full drives, file-system corruption, or broken VSS services.
Quick fixes include freeing disk space, changing backup destination, and running CHKDSK on source and target drives.
Intermediate fixes involve resetting File History, restarting VSS services, and applying Windows updates.
Advanced fixes include SFC/DISM system repair, registry tweaks, and partition verification for system image restore.
If all else fails, a third-party imaging tool like Macrium Reflect can bypass Windows' built-in backup limitations.

At a Glance

Difficulty: Medium
Time Required: 15, 45 mins
Success Rate: 78% of users

What Causes Windows 11 Backup Error 0x80070057?

Before jumping into fixes, it helps to understand where this error lives. Error 0x80070057 is a generic Windows system error meaning "the parameter is incorrect." When it shows up during backup, it's Windows' way of saying that something in the backup pipeline received bad data or encountered an unexpected condition.

The culprits fall into a few categories. First, disk space. If your system drive (C:) is nearly full or your backup target drive doesn't have enough room for shadow copies and metadata, Windows will throw this error partway through. We've seen it happen at 50% progress and at 98%, the exact point depends on how Windows allocates storage during the backup process.

Second, file-system corruption. Bad sectors on your C: drive or backup target, damaged file tables, or corrupted MFT (Master File Table) entries can trigger 0x80070057. This is why CHKDSK is one of your first stops.

Third, the Volume Shadow Copy Service (VSS) itself. This service underpins Windows' backup, restore, and System Restore features. If VSS gets misconfigured, disabled, or damaged, backups fail immediately. Similarly, if security descriptors on folders or the registry get corrupted, VSS can't create snapshots properly.

Fourth, network issues (if you're backing up to a network share). UNC paths like \\server\backup can trigger 0x80070057 due to permission mismatches, security descriptor errors, or timeouts. And fifth, partition layout problems. If you're trying to restore a system image to a drive with an incorrect partition structure, Windows will reject it with this error.

Windows 11 Backup Error 0x80070057 Quick Fix Easy

Check free space on your system drive.
Open File Explorer, right-click This PC, and select Properties. Look at your C: drive capacity. You need at least 15, 20% free space. If you're below 10%, use Disk Cleanup (search "Disk Cleanup" in the Windows search box) to remove temporary files, old Windows installations, and cache. Empty the Recycle Bin when you're done.
Check free space on your backup target drive.
Connect your external backup drive and check its available space. The rule is simple: available space should be at least as large as your used system drive space, plus 20, 30% extra. If your C: drive has 400 GB used, your backup target needs at least 500, 520 GB free. If it's tight, delete old backups or use a different drive.
Disconnect non-essential USB devices.
Unplug any USB sticks, external drives (except your backup target), SD card readers, and external DVD drives. Sometimes extra disks confuse Windows' backup process or VSS. Reconnect them after backup completes.
Restart your PC and try backup immediately.
Reboot, sign in, wait 60, 90 seconds, and launch your backup without opening email, browsers, or other applications. Background processes can lock files or interfere with VSS snapshots. If backup succeeds this time, you've found your issue, likely a resource or lock conflict.
Try a different backup destination if available.
Borrow another external drive if you have one, connect it, and attempt the backup to that drive instead. If it succeeds, your original backup drive may be failing or have bad sectors. If it fails on both drives, the issue is with your system drive or backup software configuration, not the target.

✓ Success: If backup completes after any of these steps, you're done. Test a restore by copying a small file from the backup back to your system to verify the backup is usable.

Fixing Windows 11 Backup Error 0x80070057: Intermediate Solutions

If the quick fix didn't work, we move to file-system repair and service reconfiguration. This is where CHKDSK comes in, it's the single most effective tool for catching corruption that the quick fix misses.

Run CHKDSK on System and Backup Drives Medium

Launch Error Checking on your C: drive.
Open File Explorer, right-click your C: drive, select Properties, and go to the Tools tab. Under "Error checking," click the "Check" button. Windows will ask if you want to scan the drive. Click "Scan and repair drive." You'll likely get a message saying the drive is in use and asking to schedule a check at next restart. Click "Schedule the check" and restart your PC.
Let CHKDSK run before Windows boots.
On restart, you'll see a blue CHKDSK screen. Let it run completely, do not force restart or unplug the PC. This can take 10, 30 minutes depending on drive size. Watch the progress percentage climb.
Repeat for your backup target drive.
After your C: drive check completes and Windows boots, connect your backup drive (if it's external), right-click it in File Explorer, select Properties, go to Tools, and run Error Checking the same way. This time, it may not need a reboot if it's external, just click "Scan and repair drive" and let it finish.
Verify the results.
After both checks complete, Windows will show a summary. If CHKDSK found and repaired errors, that was likely your issue. Proceed to retry your backup.

✓ Success: CHKDSK repairs corrupt file tables, recovers bad sectors, and fixes lost file references. Many 0x80070057 errors disappear after this step.

In parallel with CHKDSK, check your backup software configuration. If you're using the legacy "Backup and Restore (Windows 7)" interface, the settings can get stale or corrupted.

Reset Windows Backup Configuration Medium

Open Backup and Restore (Windows 7).
Press Win+S, type "Backup and Restore (Windows 7)," and open it. If you see an existing backup schedule, you're in the right place.
Delete old or failed backups.
Click "Manage space" (if visible). Look for backups that are incomplete, corrupted, or very old. Select them and click "Delete." This removes failed backup remnants that can trigger 0x80070057 on retry.
Change backup location.
Click "Change settings" and re-select your backup drive. If it's the same drive, choose it again and click Next. This resets the configuration and clears any cached errors.
Run a new backup, not a continuation.
Do not click "Continue last backup." Start a fresh backup by clicking "Back up now." Windows will create a new backup chain, avoiding any corruption from the previous attempt.

✓ Success: A fresh backup configuration often clears persistent 0x80070057 errors linked to stored state.

If you're using File History (the modern backup method in Windows 11), the equivalent fix applies.

Reset File History Configuration Medium

Turn off File History.
Go to Settings > System > Storage > Advanced storage options > Backup options. Or search "File History" in the Control Panel. Click "Turn off" (or "Stop using drive" if prompted).
Rename the FileHistory folder on your backup drive.
Connect your backup drive, open File Explorer, navigate to the root, and look for a folder named "FileHistory." Right-click it and rename it to "FileHistory_old" to preserve it. This clears File History's index and metadata.
Turn File History back on.
Return to Settings > Backup options and toggle File History on. Select your backup drive again when prompted.
Start a new backup.
File History will begin backing up your user files to a fresh index. Give it a few hours to run its initial pass.

✓ Success: A clean File History database often resolves indexing errors that cause 0x80070057.

Now let's tackle the VSS services. Many backup failures stem from misconfigured or disabled VSS components.

Check and Restart Volume Shadow Copy Service Medium

Open the Services console.
Press Win+R, type services.msc, and press Enter. This opens the Windows Services management tool.
Locate Volume Shadow Copy Service.
Scroll down to find "Volume Shadow Copy." Right-click it and select Properties. Check the "Startup type" dropdown. It should be set to "Manual" or "Automatic (Trigger Start)," not "Disabled." If it's Disabled, click the dropdown, select "Manual," click Apply, then click the "Start" button. Click OK.
Check Microsoft Software Shadow Copy Provider.
Scroll down to "Microsoft Software Shadow Copy Provider." Repeat the same check: should be Manual, not Disabled. Set to Manual and Start if needed.
Check Windows Backup (if present).
Look for "Windows Backup" service. If present, ensure it's set to Manual or Automatic Trigger Start, not Disabled. Apply and Start if needed.
Restart your PC.
Close Services and restart Windows. The VSS services will reload with the corrected settings.

✓ Success: VSS is now active and can create snapshots for backup operations. Most 0x80070057 errors related to VSS are resolved here.

We also recommend running a fresh Windows Update check. Backup reliability is improved in cumulative updates fairly often.

Install Pending Windows Updates Easy

Open Windows Update settings.
Press Win+I to open Settings, go to System > Windows Update, and click "Check for updates."
Install all available updates.
Windows will download and install any pending updates, including cumulative patches and security fixes. You may be prompted to restart. Do so.
Retry backup after restart.
Once Windows restarts and settles, attempt your backup again. Many backup errors, including 0x80070057, are resolved by cumulative updates.

✓ Success: Windows updates patch VSS, backup component bugs, and file-system issues that cause 0x80070057.

Advanced Fixes: System Files, Registry, and Partition Verification

If you've reached this point and backup still fails, we're dealing with deeper corruption or low-level misconfiguration. The fixes here are safe but require command-line tools and registry editing. Proceed carefully and export a registry backup first if you're unfamiliar with regedit.

Repair System Files with SFC and DISM Hard

Open Command Prompt as Administrator.
Press Win+S, type "Command Prompt," right-click the result, and select "Run as administrator." Approve the UAC prompt.
Run the System File Checker scan.
Type sfc /scannow and press Enter. This utility scans Windows system files and repairs corrupted ones. It will take 10, 20 minutes. Do not close the window or interrupt the scan.
Run DISM to restore Windows image health.
After SFC completes, run DISM /Online /Cleanup-Image /RestoreHealth and press Enter. This downloads and repairs damaged Windows components from Microsoft servers. It will take another 15, 30 minutes depending on your internet speed and the extent of damage.
Reboot and retry backup.
After both scans finish, close Command Prompt and restart your PC. Attempt your backup once Windows boots.

✓ Success: SFC and DISM repair corrupt system files that underpin backup and VSS functionality. If 0x80070057 was caused by damaged Windows components, this step resolves it.

Now for the registry fix. This is a known workaround for 0x80070057 in both backup and Windows Update contexts, and it adjusts I/O buffering to work around certain hardware or driver incompatibilities.

Add CopyFileBufferedSynchronousIo Registry Value Hard

Export a registry backup.
Press Win+R, type regedit, and press Enter. Approve UAC. Click File menu, select Export, choose a location (Desktop is fine), and export with the default "All" range selected. This creates a restore point if something goes wrong.
Navigate to the System policy key.
In Registry Editor, navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\System. If the "System" key does not exist, right-click "Microsoft," select New > Key, and name it exactly "System."
Create the DWORD value.
In the System key's right pane, right-click empty space, select New > DWORD (32-bit) Value. Name it exactly CopyFileBufferedSynchronousIo (case-sensitive).
Set the value to 1 in Hexadecimal.
Double-click the new value. In the Edit DWORD dialog, ensure "Base" is set to Hexadecimal, then set Value data to 1. Click OK.
Close Registry Editor and restart.
Close the Registry Editor window and restart your PC. This setting takes effect on boot.
Retry backup.
After restart, attempt your backup. The adjusted I/O buffering often resolves 0x80070057 that persists despite other fixes.

✓ Success: This registry tweak is a last-resort but effective fix for I/O-related backup errors. If backup now completes, you can leave the setting in place.

For system image restore errors specifically, partition layout is critical. Misaligned or missing system partitions cause 0x80070057 during restore.

Verify System Partition Layout Hard

Open DiskPart command-line tool.
Press Win+R, type cmd, and press Enter. At the prompt, type diskpart and press Enter. You'll see DISKPART> prompt.
List your disks and partitions.
Type list disk and press Enter to see all disks. Identify your main storage disk (usually Disk 0). Type select disk 0 (replace 0 with your disk number if different) and press Enter. Then type list partition to see all partitions on that disk.
Check for system partition.
Look at the output. Windows requires a small system partition (typically 100, 550 MB, labeled "EFI System" or "System Reserved") and a main OS partition (usually the largest). If the system partition is missing, too small (under 100 MB), or absent, Windows restore will fail with 0x80070057.
Know your next step.
If partitions look correct, exit DiskPart (type exit) and try restoring to a different drive if available. If partitions are genuinely misconfigured, fixing them requires backing up your data and recreating partitions, a complex task beyond this guide. Consider professional imaging software or consulting Microsoft support for partition repair.

⚠ Warning: DiskPart commands can erase data if misused. Only list and check; do not use clean, delete, or create commands unless you are absolutely certain and have backed up all data elsewhere.

If Windows' built-in backup tools remain unreliable despite these fixes, a third-party imaging tool can bypass the entire issue. We've seen many users switch to dedicated imaging software after persistent 0x80070057 errors, and it often works where Windows' tools don't.

Switch to Third-Party Imaging Software Medium

Download a reputable free imaging tool.
Macrium Reflect Free, EaseUS Disk Copy, or AOMEI Backupper are solid options. Download from the official vendor website (not a third-party download site) to avoid malware.
Install and run the tool.
Follow the installer. Launch the tool and select "Create an image" or "Backup disk." These tools bypass Windows backup components entirely and write directly to the drive.
Configure and start the image.
Select your source (C: drive) and destination (external backup drive), ensure sufficient space, and click Start. Most tools display a progress bar. Your image will complete in 30 minutes to 2 hours depending on drive size and speed.
Verify the image.
After completion, most tools offer a "Verify" function. Run it to confirm the image is readable and usable.

✓ Success: Third-party imaging tools work around Windows backup limitations and 0x80070057 entirely. If your image completes here, Windows' backup service likely has unresolved configuration issues. Store the image safely and consult remote support if you want to restore Windows backup functionality.

Remote Support for Persistent Windows 11 Backup Error 0x80070057

Preventing Windows 11 Backup Error 0x80070057 in the Future

Once you've fixed it, keeping it fixed is the priority. Backups fail most often because of neglected maintenance, so here's the discipline that matters.

Keep free space in reserve. Aim to keep at least 20% of your C: drive free at all times. Use Storage Sense (Settings > System > Storage > Storage Sense) to automatically delete temporary files, old Windows Update files, and Recycle Bin contents when space gets low. This prevents 0x80070057 caused by last-minute space exhaustion.

Run CHKDSK monthly or after improper shutdowns. Set a calendar reminder. Open drive Properties > Tools > Check and run a scan monthly, or immediately after a power loss, forced restart, or system crash. Bad sectors develop over time, and catching them early prevents backup failures.

Test your backups. Every quarter, restore a test file from your backup to verify it's readable. Many users discover a failed backup only when they need it. Test beforehand.

Use quality backup media. Cheap or old external drives fail silently. Replace any drive over 5 years old or showing warning signs (slow speeds, frequent disconnects, System event log errors). SMART monitoring tools can alert you to failing drives before they corrupt your backup.

Avoid sudden unplugs during backup. Do not unplug external backup drives while backup is running. Let it complete. Use a UPS (uninterruptible power supply) for desktops to prevent mid-backup power loss, which corrupts both your backup and your system drive.

Keep Windows and drivers updated. Backup reliability improves with each cumulative update. Check Windows Update monthly and install promptly. Similarly, ensure your chipset and storage drivers are current, outdated drivers can cause I/O errors that trigger 0x80070057.

Windows 11 Backup Error 0x80070057 Summary

Error 0x80070057 is frustrating, but it's almost always fixable. Start with the quick fix: check disk space, run CHKDSK, and restart backup services. If that doesn't work, move to intermediate fixes like resetting backup configuration, File History, and installing updates. Finally, pull in the advanced toolkit: SFC/DISM, the CopyFileBufferedSynchronousIo registry value, and partition verification. Most users solve this within an hour using these methods. If you exhaust all steps and backup still fails, switch to a third-party imaging tool, they work around Windows backup limitations entirely and rarely hit 0x80070057. And remember: a backup is only valuable if it actually completes. Test it quarterly and maintain your system drive to keep backups reliable.