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Firefox Freeze when launching ytdl protocol

If you click the button or run any command from the userscript, Firefox freezes.

Step to reproduce the issue

• Open any site
• Paste ytdl:?type=auto&url=https://www.youtube.com/watch?v=2m8n3VRO0o8 in your url bar and press ENTER

If firefox freezes, you must kill the firefox.exe process.

Solution

Reopen Firefox and press CTRL+SHIFT+DEL. Set the action like:

Restart Firefox and test again the steps to reproduce the issue above.

If the issue persists, the problem might be caused by some Windows 11 components. To test it, press Win+i. If your settings hangs and is stuck with this: <img width="500" image" src="https://github.com/user-attachments/assets/b5151367-416a-4c50-a7de-5cc19b5e4ec7" />

Reboot the PC and press Win+i again to see if it is fixed. In this case, Firefox should open protocols and other external applications now. If Windows 11 still has problem to display some settings sections (home, system, etc.), read this article. Always run powershell commands mentioned in the article in an admin console/terminal. Try to restart explorer.exe before any other solutions.