Application Not Responding on Windows — What It Means and How to Fix

Seeing 'Application Not Responding' on Windows? Learn what causes this error, when to wait vs force-close, and how to prevent it from happening again.

How does the freeze behave?

One specific app — everything else is fine

The app itself hit a bug or memory issue.

Next step: Force-quit it via Task Manager (Ctrl+Shift+Esc → right-click → End Task), then reopen. If it keeps happening, uninstall and reinstall the app.

Started after a Windows or app update

The update introduced a compatibility conflict.

Next step: Check the app developer's release notes for known issues. In Windows Update history you can uninstall the most recent Windows update if it's the likely cause.

Happens across many apps / whole system feels slow

A background process is consuming too many resources.

Next step: Open Task Manager (Ctrl+Shift+Esc) and sort by CPU or Memory. Identify and close the process using the most resources.

Frequently asked questions

Why does an application stop responding on Windows?
Applications stop responding when a process gets stuck waiting for a resource — usually due to high CPU usage, memory shortages, a software bug, or a corrupted file. The fix depends on which cause applies.
How do I fix an application that is not responding?
First, wait 30 seconds — some apps recover on their own. If not, use Task Manager (Ctrl+Shift+Esc) to end the process. If it happens repeatedly, update the app, clear its cache, or reinstall it.
Will I lose my work if I force-close an unresponsive app?
Possibly. Unsaved changes since the last auto-save may be lost. Many apps (Word, Excel, Chrome) have auto-recovery features that restore recent work when you reopen the application.
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