Cursor IDE - Many file menu options and buttons not working

[rtnb]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

A few examples of this bug:

1. Right click on the file explorer - > Click new file or new folder → Nothing happens
2. Open Cursor Settings → Open Tools & MCP → Click New MCP Server → Nothing happens

I have reinstalled cursor, tried restarting it many times. Nothing fixes it.

Steps to Reproduce

1. Right click on the file explorer - > Click new file or new folder → Nothing happens
2. Open Cursor Settings → Open Tools & MCP → Click New MCP Server → Nothing happens

Expected Behavior

1. I can create new folders and files from within the IDE
2. I can edit MCPs or create new ones from within the settings menu

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.7.44 (system setup)
VSCode Version: 1.99.3
Commit: 9d178a4■■■89981b62546448bb32920a8219a5d0
Date: 2025-10-10T15:43:37.500Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

[deanrie]

Hey, thanks for the report. It looks like a UI bug on Windows in recent versions. Let’s quickly check a few things:

1. Start in safe mode with this command in the terminal:
   cursor --disable-extensions
   Do right-click actions and MCP buttons work?

2. Check the DevTools Console for any errors:

• Open the Console tab
• Right-click in the file explorer or click “New MCP Server”
• Copy any red error messages

3. Conflicting software:
   Temporarily disable your antivirus/firewall and test again.

These details will help us pinpoint the cause.

[rtnb]

Safe mode did not fix issue 1.

Issue 2 - the “New MCP Server” button now correctly opens the mcp.json file

I’m not sure which devtools/console you’re referring to.

[deanrie]

Open the command palette and type “Toggle developer tools”.

[rtnb]

No errors when trying to create a new file or folder.

I’m not sure what caused it but this error appeared in console and afterwards the “New MCP Server” button doesn’t work again.

workbench.desktop.main.js:7228 ERROR WHEN RENDERING SOLID COMPONENT Error: Internal Lexical error: invariant() is meant to be replaced at compile time. There is no runtime version. Error: Unable to find an active editor state. State helpers or node methods can only be used synchronously during the callback of editor.update() or editorState.read().
at Uh (workbench.desktop.main.js:441:1068806)
at Owe (workbench.desktop.main.js:443:25350)
at II (workbench.desktop.main.js:443:34443)
at vNr.getLatest (workbench.desktop.main.js:445:11757)
at vNr.getTextContent (workbench.desktop.main.js:450:1459)
at H (workbench.desktop.main.js:6701:12972)
at Object.fn (workbench.desktop.main.js:6701:18576)
at d8o (workbench.desktop.main.js:276:30033)
at oet (workbench.desktop.main.js:276:29787)
at gDt (workbench.desktop.main.js:276:31414)
at sRu (workbench.desktop.main.js:276:32816)
at workbench.desktop.main.js:276:32276
at dG (workbench.desktop.main.js:276:31592)
at iRu (workbench.desktop.main.js:276:32269)
at dG (workbench.desktop.main.js:276:31603)
at lP (workbench.desktop.main.js:276:27153)
at r (workbench.desktop.main.js:276:44218)
at Object.update (workbench.desktop.main.js:541:33345)
at SMr.setData (workbench.desktop.main.js:541:37822)
at workbench.desktop.main.js:6353:1304
at Ap.updateComposerDataSetStore (workbench.desktop.main.js:2580:57050)
at workbench.desktop.main.js:52:44637
at Qms (workbench.desktop.main.js:52:44323)
at I5 (workbench.desktop.main.js:52:44284)
at n.value (workbench.desktop.main.js:52:44626)
at l9.submitChatMaybeAbortCurrent (workbench.desktop.main.js:6353:1271)
at async ha (workbench.desktop.main.js:7208:2319)

[deanrie]

Thanks for the console error, that Lexical editor error is helpful. The MCP button issue looks related to recent changes in chat.

Next steps:

Antivirus/firewall test: Could you temporarily disable your antivirus and firewall, restart Cursor, and test both issues again? This is the most common cause of UI interactions being blocked on Windows.

Fresh workspace test: Try opening Cursor in a completely new empty folder, does right‑click work there?

The fact that safe mode didn’t fix the right‑click issue suggests it’s not an extension conflict. Let me know what the antivirus test shows.

[rtnb]

I disabled windows firewall and antivirus and run in safe mode and still getting the problematic behavior.

[deanrie]

Thanks for testing. Since safe mode, disabling antivirus, and a new workspace didn’t fix the right‑click issue, let’s try a full app data reset:

Full data clean (we’ll back up first):

1. Fully close Cursor
2. In File Explorer, go to:
   • %USERPROFILE%\AppData\Local\Cursor → rename to Cursor.old
   • %USERPROFILE%\AppData\Roaming\Cursor → rename to Cursor.old
3. Restart Cursor (it will create fresh folders)
4. Test right‑click and the MCP buttons

If that doesn’t help, please also check:

• Does Ctrl + N create a new file as a workaround?

If the clean data reset doesn’t help, I’ll pass this to the team for investigation.

[rtnb]

I don’t have %USERPROFILE%\AppData\Local\Cursorbut resetting the other one seems to have fixed my issues! The browser agent is also working again (my issue from another bug report)