How to Fix the “A Debugger Has Been Found” Error in Windows 10 & 11

Some users have reported that they need to fix debugger error on Windows 11/10 PC. These users see this error message when they try to launch certain apps or games: “A debugger was found on your system.” Consequently, apps and games encountering this debugger error do not launch.

Do you get the same debugger error message when trying to launch certain software in Windows 11/10? If this is the case, you might be able to fix this problem by applying the possible solutions in this guide.

1. Uncheck the MSConfig Debug check box

MSConfig (system configuration) contains a Debug Mode setting that can trigger the debugger error if enabled. Many users have confirmed that disabling this option fixed the debugger error for them. This is how you can deselect them Debug Checkboxes in MSConfig:

  1. Press Win + R to launch the Run command box.
  2. Then type msconfig in Run and click the OK Possibility.
  3. Select the system configuration Boots Tab.
  4. click Expanded options to bring up the Advanced BOOT Options window.
  5. Disable those Debug check box when selected.
  6. Choose OK in the Advanced BOOT Options window.
  7. Click MSConfig Apply Button to save the new options.
  8. Choose OK to close the system configuration tool.
  9. Restart Windows.

2. Update Windows

The debugger error is more likely to occur on older versions of Windows. We recommend users to update their copy of Windows to the latest versions or install available patch updates. You can check for updates in Windows as follows:

  1. Press Win + S to access the Windows search tool.
  2. Enter check for updates in the search field.
  3. Next, select Check for updates to open this part of the settings.
  4. click Check for updates to find available updates.
  5. Choose Download and install Option for each available Windows version update.
  6. If you cannot select a version (build) update for the upgrade, install all available patches.

Antivirus utilities can cause the debugger error when affected games and software packages mistakenly perceive them as debuggers. McAfee and AVG are two third-party antivirus utilities that have been widely confirmed to cause this error. However, try adding the affected software to the exclusion list (exception list) of your antivirus tool. Our guide to setting exclusions in Windows Security shows you how to set up program exceptions for Windows’ built-in antivirus app.

4. Change the startup settings in Windows

You can change startup settings in Windows 11/10 to disable third-party programs and services on startup (also known as clean boot). A clean boot could remove a background app or service that is starting automatically and causing the problem. Our Windows 11 clean boot guide has all the details on how to change boot settings.

Restart Windows after disabling third-party startup items. Then try launching apps and games that are showing the debugger error to see if it’s fixed. If this possible solution suffices, re-enable the startup items one by one to see what is causing the debug error.

5. Uninstall GameGuard

GameGuard is anti-cheating software known for causing bugs in multiplayer games. If you want to fix game debugger error, uninstalling GameGuard might be a solution. Here’s how to uninstall GameGuard on Windows:

  1. Open Programs and Features by typing appwiz.cpl into the Windows search box and select this applet from there.
  2. Then select GameGuard in Programs and Features.
  3. Click Game Guards Uninstall Button.
  4. Choose one Yes Option you see when prompted for confirmation.
  5. After removing GameGuard, press the window + button E Key.
  6. Open this folder path:
    C:\ Program Files (x86)\NCSOFT\BnS
  7. If you see a remaining GameGuard folder, right-click and select it Extinguish.

6. Reinstall any affected software

Consider reinstalling software packages that are experiencing the error if alternative solutions do not resolve the issue. There could be an error in the affected software packages that can only be fixed by reinstalling. You can remove apps using the different methods in our guide on how to uninstall software in Windows 11. Then download the latest versions of the apps or games that you uninstalled from their websites to reinstall them.

7. Restore Windows to an earlier point in time

This possible solution involves restoring Windows 11/10 to an earlier date using System Restore. If you can select a restore point that predates the debugger issue on your PC, then simply resetting the operating system might just work. Restoring Windows to an earlier point in time removes recently installed apps, some of which may have been interfering with software for which you need to troubleshoot the debugger issue. Our guide to creating restore points in Windows shows you how to use the System Restore utility.

Note that System Restore must be enabled before you need to troubleshoot the debugger error. There is no point in turning on this utility and creating a restore point if it was not previously enabled. If this utility was previously enabled, select to roll back Windows to a point in time when the affected apps were working properly. Alternatively, select the oldest available restoration date.

Make Debugger error disappear in Windows 11

So, this is how you can stop the debugger error in Windows 11 and 10. Solution 1 is a particularly widely confirmed fix for the debugger error that we recommend users to try first. If MSConfig debug mode is not enabled, try applying the other resolutions in the order listed.

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