Cursor fails to load

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

My cursor is not loading, I tried to reinstall and I still have this issue. When I check the dev tools, I get this in the console: ERR No Connect transport provider registered.: Error: No Connect transport provider registered.

Steps to Reproduce

Open cursor

Expected Behavior

Cursor leads correctly and I can use it

Operating System

Windows 10/11

Version Information

Version: 3.4.20 (system setup)
VSCode Version: 1.105.1
Commit: 0cf8b06883f54e26bb4f0fb8647c9500ccb43310
Date: 2026-05-15T02:26:10.351Z
Layout: editor
Build Type: Stable
Release Track: Default
Electron: 39.8.1
Chromium: 142.0.7444.265
Node.js: 22.22.1
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.22631

Does this stop you from using Cursor

Yes - Cursor is unusable

5

Hey @yuripl

This is quite an old version of Cursor at this point! Can you try on v3.7 (https://cursor.com/download) and see if the issue persists?

If you still face an issue, this documentation on the effects of endpoint protection can be useful in tracking down why Cursor may fail to be starting up correctly!