# Login into cursor issue ans

**URL:** <https://forum.cursor.com/t/login-into-cursor-issue-ans/156269>\
**Category:** Bug Reports\
**Tags:** installation, login\
**Created:** [March 30, 2026, 6:59pm UTC](https://forum.cursor.com/t/login-into-cursor-issue-ans/156269 "2026-03-30T18:59:49Z")\
**Posts on this page:** 1\
**Showing post:** 5

<div class="post-metadata">

**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\
**Post date:** [March 30, 2026, 7:19pm UTC](https://forum.cursor.com/t/login-into-cursor-issue-ans/156269/5 "2026-03-30T19:19:25Z")

</div>

Hey, thanks for the report. There are two separate issues here. I’ll help with both.

Login issue main blocker

Auth is passing on the server side, but the app isn’t picking up the callback. Since you reinstalled with a different version, the `cursor://` protocol handler likely needs to be re-registered.

Try a clean reinstall on Mac:

- Fully quit Cursor
- Delete leftover data, make a backup first:

```sh
rm -rf ~/Library/Application\ Support/Cursor
rm -rf ~/.cursor

```

- Download the latest version from [Cursor · Download](https://cursor.com/download)
- Install and try logging in again

If that still doesn’t work, once you’re in the app, open Settings `Cmd+,`, search for `proxy support`, and change Http: Proxy Support from `override` to `on`, then restart. This has fixed similar login loops: [Cursor Desktop App Does Not Sign-In After Signing In From Web](https://forum.cursor.com/t/cursor-desktop-app-does-not-sign-in-after-signing-in-from-web/152630)

Also check if you’re using a VPN, proxy, or firewall. Try disabling them temporarily.

Waiting for extension host on Ubuntu

This is a known issue the team is tracking. Once you can log in, try:

- Settings \> search `HTTP compatibility mode` \> switch to HTTP/1.1
- `Ctrl+Shift+P` \> Developer: Reload with Extensions Disabled

More context in these threads:

- [Waiting for Extension Host](https://forum.cursor.com/t/waiting-for-extension-host/154134)
- [After last update, stuck at "Waiting for extension host"](https://forum.cursor.com/t/after-last-update-stuck-at-waiting-for-extension-host/149538)

Let me know how it goes.

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_[View the full topic](https://forum.cursor.com/t/login-into-cursor-issue-ans/156269)._