How can I fix this JavaScript error?

Question

I tried to update my desktop Notion app today and then this message popped up, keeps happening when I try to open the app and if I try to uninstall it. What should I do?

Answer 1

Hello,

You are hitting a corrupted Notion update. That error means a native module inside Notion broke, so the app cannot start or uninstall. A clean reinstall fixes it.

Close Notion first. Press Ctrl+Shift+Esc, end any Notion.exe, Notion Helper, Update.exe or Squirrel processes. Then do a cleanup and reinstall with Windows built-in tools.

Open Windows Terminal as Administrator and run these commands exactly, one line at a time:

taskkill /f /im Notion.exe
taskkill /f /im Update.exe
taskkill /f /im squirrel.exe

rd /s /q "%LocalAppData%\Programs\Notion"
rd /s /q "%AppData%\Notion"
rd /s /q "%LocalAppData%\SquirrelTemp"
rd /s /q "%LocalAppData%\Notion"

Now, restart the PC and reinstall Notion. The easiest and safest way is with winget from the Command Prompt:

winget install Notion.Notion

After install, launch Notion and sign-in. If anything in these steps fails, tell me exactly which command and what message you see, and I will adjust the fix.