Fix ERROR_BAD_FUNCTION_TABLE (0X0000022F) on Windows

What you're up against

Error 0X0000022F — ERROR_BAD_FUNCTION_TABLE — pops up when Windows tries to unwind a function call and finds a corrupted or mismatched function table. This usually crashes the app or triggers a blue screen. I've seen it most often in games and heavy render software when they load a corrupted DLL after a bad update. It's infuriating, I know.

Here's the fix flow. Start with the 30-second fix. If that doesn't stop the crash, move to the 5-minute fix. Only go to the advanced fix if the problem keeps coming back.

30-second fix: Reboot and update the app

Before you do anything else, save your work (if you can) and restart your PC. A fresh boot clears temporary memory corruption that sometimes triggers this. Then open the app that crashed. If it updates itself, let it. For Steam or Epic games, verify the game files — that often fixes a corrupted DLL inside the install.

If the error still shows up after reboot and update, move to the next step.

5-minute fix: Run System File Checker

This checks Windows system files. Run it from an elevated Command Prompt:

1. Open Start, type cmd, right-click Command Prompt, choose "Run as administrator".
2. Type sfc /scannow and hit Enter. Let it finish — takes 5-15 minutes.
3. If it finds corrupted files, it'll replace them. Reboot and test the app.

SFC can't fix everything, but it catches the obvious stuff. If the error persists, run DISM next:

DISM /Online /Cleanup-Image /RestoreHealth

This can take 20 minutes, but it fixes the Windows component store. I'd do this even if SFC said everything was fine — DISM finds deeper corruption SFC misses.

15+ minute fix: Clean boot and repair .NET

If you're still getting the error, something else is interfering. Let's isolate it.

Step 1: Clean boot

This disables all third-party services and startup programs:

1. Press Win + R, type msconfig, hit Enter.
2. Go to the Services tab, check "Hide all Microsoft services", then click "Disable all".
3. Go to the Startup tab, click "Open Task Manager", and disable every startup item.
4. Click OK, restart.

If the error stops after clean boot, you've got a naughty third-party service — probably an old antivirus or a driver updater tool. Re-enable things one at a time until you find the culprit.

Step 2: Repair .NET Framework

This error often hits .NET-based apps. Run the .NET Framework Repair Tool from Microsoft's site. It's a small download that checks and repairs .NET installations. I've used it on maybe a dozen machines with this exact error — fixed about half of them.

Step 3: Check for driver corruption

Occasionally a bad driver — especially graphics or storage drivers — can inject a bad function table. Update your graphics driver from the manufacturer's site (not Windows Update). For Nvidia, use GeForce Experience and do a clean install. For AMD, use Adrenalin with factory reset. For storage drivers, check your motherboard manufacturer's support page.

If nothing works

Honestly, if you've done the clean boot and .NET repair and still see 0X0000022F, it's likely a corrupted app install. Uninstall the crashing app completely, run a disk cleanup (search for "Disk Cleanup" in Start, select your system drive, clean all temp files), then reinstall it from scratch. I've seen this error vanish after a fresh install of Visual Studio or a game that didn't clean up after a failed update.

If it's a system-wide crash (blue screen during boot), you might need to use Windows Recovery Environment to run DISM and SFC from a command prompt at the advanced startup screen. Boot from a Windows USB, click "Repair your computer", go to Troubleshoot > Advanced Options > Command Prompt, and run both tools there.

This error is stubborn, but it's not a hardware killer. It's always fixable. You've got this.