Unable to log in – Error 1101 when accessing authenticator.cursor.sh

Bug Reports
1

Describe the Bug

I’m currently unable to log into my Cursor account. When I try to authenticate, I’m redirected to authenticator.cursor.sh and immediately get a Cloudflare Error 1101 – Worker threw exception. This makes it impossible to access the application.

Steps to Reproduce

Steps to Reproduce:
1. Open Cursor and attempt to log in.
2. The authentication flow redirects to https://authenticator.cursor.sh.
3. A Cloudflare page is displayed with Error 1101 and the message: Worker threw exception.
4. Login fails.

Expected Behavior

After attempting to log in, I should be authenticated and redirected to my workspace instead of receiving an error.

Screenshots / Screen Recordings

Captura de pantalla 2025-06-12 a las 20.08.27.png
Captura de pantalla 2025-06-12 a las 20.08.27.png2138×902 151 KB

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Versión: 1.0.0
Confirmar: 1.96.2
Fecha: 53b99ce608cba35127ae3a050c1738a959750860
Electron: 2025-06-04T19:21:22.523Z
ElectronBuildId: 34.5.1
Chromium: undefined
Node.js: 132.0.6834.210
V8: 20.19.0
SO: 13.2.152.41-electron.0

Does this stop you from using Cursor

Yes - Cursor is unusable

2

me too

3

same here

4
1 Like
5

We’re looking to remove Cloudflare out of the loop while the outage is going on!
Should hopefully be resolved soon.

2 Likes
6

same here

7

Still cant log in? Any ETA for the fix?

8

Same problem . I can not login…

9

Problems occurred after receiving the new version update of Cursor 1.1.1!

10

same

11

This is fixed. This was caused by a Google Cloud incident earlier today.