Windows 11 is highly customizable, and many developers are loving the experience of building on it. However, while using some applications on the OS, some users have talked about some application errors, like the exception_illegal_instruction error on Windows 11.
This error often indicates that the PC is missing some critical components needed to run certain programs and may include the error code 0xC000001D. This problem is triggered more often while launching games, especially on Steam. It may also signify file corruption or conflicts between some third-party applications. Let us show you how to fix it on your Windows devices.
1. Repair damaged or Corrupted System Files
On Windows, there are a few ways you may repair corrupted system files that trigger the exception_illegal_instruction error. One of the best ways is by running the System File Checker scan. This scan is a command-line utility that checks for corrupted files and replaces or repairs them.
Step 1: Launch the Run dialog by pressing Windows + R.
Step 2: Type cmd and hit Ctrl + Shift + Enter.
Step 3: Type the script below and hit Enter.
sfc /scannow
Step 4: Restart your computer and verify that it fixes the exception_illegal_instruction error.
2. Clean Boot the Computer and Restart the Application
When you encounter application errors, the problem could be that other applications or services conflict with it. So, you may clean boot your computer. This will start the device with only an essential set of processes, excluding possible problematic processes that may trigger the exception_illegal_instruction error on Windows.
Step 1: Press Windows + R, type msconfig, and hit Enter.
Step 2: Click the Services tab, tick the Hide all Microsoft services checkbox, and click the Disable all button.
Step 3: Select the Startup tab and click Open Task Manager.
Step 4: Select a startup app and click the Disable button. Repeat this process for as many startup apps as you need to disable.
Step 5: Return to the System Configuration screen and click OK.
Step 6: Finally, you may enable apps one after the other to see which triggers the conflict.
3. Repair Visual C++ Redistributables
Visual C++ Redistributables are a vital collection of runtime libraries for running several Windows 10 and 11 applications, providing memory management, file I/O and networking. If this component is corrupted, it may trigger the exception_illegal_instruction application error. A solution will be repairing it.
Step 1: Launch the Run dialog by pressing Windows + R.
Step 2: Type appwiz.cpl and hit Enter.
Step 3: Click the most recent Microsoft Visual C++ Redistributable option, then click the Change button.
Step 4: Click Repair and let the process complete, then check if it fixes the application error.
Alternatively, uninstall Microsoft Visual C++ Redistributable, redownload, and install a fresh version.
4. Repair the RAM
Repairing any RAM problems will be an effective fix because you may experience crashes on applications when the RAM can no longer successfully carry them. You may use the built-in Windows Memory Diagnostic tool to fix RAM issues.
Step 1: Click the Taskbar’s magnifying lens, type memory, then select
Step 2: Click Restart now and check for problems.
5. Reinstall the Affected Program
If the affected program is corrupted, none of the solutions will work till you reinstall with a freshly downloaded version of the application. Before downloading and installing the app, you must remove the old application by following the steps below.
Step 1: Launch the Run dialog by pressing Windows + R.
Step 2: Type appwiz.cpl and hit Enter.
Step 3: Click the application from the app list and click Uninstall.
Moving Past the exception_illegal_instruction Error
With the solutions we have discussed in this guide, you should have successfully resolved the exception_illegal_instruction application error. Note that this error will not affect every application. It is mainly caused by file corruption and will affect the application that needs these files to work.