Windows 11 "explorer.exe - Application Error" Causes and Solutions

This time, we will introduce the causes and solutions for the "explorer.exe - Application Error" that occurs in Windows 11.

The timing of when this error occurs varies depending on the environment, such as when starting up Windows 11, shutting down, or during normal operation.

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Causes and Solutions for "explorer.exe – Application Error"

システムリソース不足

If your PC has low specs, opening too many applications at the same time may result in a lack of resources.

To put it simply, resource shortage means that you have the capacity to do up to three tasks at once, but no more than that.

However, if your boss asks you to do more than you can handle, saying things like "I'd like you to do this too" and "I'd like you to do that too," you'll find it hard to keep up, right?

In the same way, if you work near or beyond the limits of your PC's specifications, your PC will eventually stop functioning properly and start displaying errors.

How to fix insufficient system resources

1. Buy a PC with better specs, or upgrade your CPU, memory, etc. if possible.

If you improve the specs, the number of applications that can be run simultaneously will also increase. Also, if the specs of the CPU and memory are improved, you will be able to easily perform tasks that you previously had to do, just like lifting a 10kg object with one hand instead of using both hands.

2. Don't open too many applications at the same time

If you continue to use the computer with low specs, try not to open too many applications at the same time. Also, close applications that you are not using.

3. Restart regularly

Restarting your PC or application will free up system resources. If your PC is running extremely slow or experiencing many errors, a simple restart may be the solution.

Corrupted system files

If there is an abnormality in the system files or explorer.exe itself, the system will not function properly.

Repairing system files or re-registering DLL files may solve the problem.

Repairing system files in Win10/Win11 with "System File Checker"

Causes and Solutions for the "Unsupported Interface" Error

System and application conflicts

Windows 11 receives feature updates through Windows Update, but new features may conflict with third-party applications.

In such cases, the problem may be resolved by uninstalling the application causing the problem or by updating to a newer version if one is available.

infected with a virus

If you are infected with a virus, various problems will occur.

Regularly updated security software with real-time protectionSecurity software that is recommended.

Windows is fundamentally broken

If the above solutions do not solve the problem,Factory reset Windows 11, a clean install is the best bet.

hardwareIf the problem is caused by any of the above, a reset or clean install can usually solve the problem.

Windows Update

A recent update may also be causing the "explorer.exe - Application Error" error.

Try uninstalling the update that was installed just before the error occurred and see if that helps.

[Solved] Can't uninstall Windows updates? A detailed explanation of the causes and solutions

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Other causes

For example, explorer.exe may also report an error if a program waits too long to read data, including reading CDs and DVDs.

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Person who wrote this article

Driven by questions arising from my daily PC use and the desire to "do more," I have been pursuing self-study in Windows since around 2008. I am sharing the "aha!" techniques and solutions I discovered through trial and error with the sole purpose of helping you in your PC life.

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