Cursor showing empty screen after upgrading MacOs 26 Tahoe

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Before upgrading to mac Os 26, there is no issue but after the upgrade, the cursor no longer working, it just showing empty blank screen.
Note: the other code editors (VSCode, windsurf, etc ) are working fine after upgrade.

Steps to Reproduce

  • Upgrade the macos version to 26 (Tahoe)
  • After upgrade, the cursor is just showing blank screen even after i select and open the project folder.

Screenshots / Screen Recordings

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.6.27 (Universal)
VSCode Version: 1.99.3
Commit: d750e54bba5cffada6d7b3d18e5688ba5e944ad0
Date: 2025-09-17T20:21:17.042Z (1 day ago)
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Darwin arm64 25.0.0

Does this stop you from using Cursor

Yes - Cursor is unusable

Hey, thanks for the report. We’ll look into it. Could you also open the DevTools panel and check for errors?

@deanrie
I found some errors at DevTools, here is the error messages from console
Critical Errors

  • ERR [Extension Host] Error: Unexpected SIGPIPE at process. (file:///Applications/Cursor.app/Contents/Resources/app/out/bootstrap-fork.js:5:11805) at process.emit (node:events:524:28)

  • ERR Get package info exception! Get package info exception!

  • ERR [Background Composer] Error updating branch on git status change: Error: No full commit provider registered at Ggn.getCurrentBranch (workbench.desktop.main.js:1407:58436) at UCt.value (workbench.desktop.main.js:5567:30693) …and the rest of the stack trace.

Extension-Specific Errors

  • ERR Extension ‘ms-vscode.cpptools’ wants API proposal ‘lmTools’ but that proposal DOES NOT EXIST. Likely, the proposal has been finalized (check ‘vscode.d.ts’) or was abandoned.

  • The C# extension requires at least 2.2.3 of the .NET Install Tool (ms-dotnettools.vscode-dotnet-runtime) extension. Please update to continue.

  • Activating extension ‘ms-dotnettools.csharp’ failed: Version 2.2.3 of the .NET Install Tool (ms-dotnettools.vscode-dotnet-runtime) was not found, C# will not activate..

  • Cannot activate the ‘Tizen Extension’ extension because its dependency ‘C#’ failed to activate.

Configuration and Unknown Language Errors

  • ERR [deinsoftware.arrow-function-snippets]: Unknown language in contributes.arrow-function-snippets.language. Provided value: tsx-attr

  • ERR [deinsoftware.arrow-function-snippets]: Unknown language in contributes.arrow-function-snippets.language. Provided value: json5

  • ERR [sidthesloth.html5-boilerplate]: Unknown language in contributes.html5-boilerplate.language. Provided value: njk

  • ERR [vinliao.fast-arrow]: When omitting the language, the value of contributes.fast-arrow.path must be a .code-snippets-file. Provided value: ./snippets/snippets.json

Other Notices

Could you try disabling all of your extensions, and seeing if that helps?

If it doesn’t, then could you perform a clean installation? Please see these instructions.

1 Like

I am seeing the same issue. I just upgraded to macOS Tahoe and Cursor is completely not usable. I removed cursor and cleaned up the files and installed again. It’s still the same.

I also have the same after upgrading, when I try to open a file it is stuck in loading state. Also chat/agent doesnt do anything anymore. completely unusable

This topic was automatically closed 22 days after the last reply. New replies are no longer allowed.