Lost Chat History After Forced Re-Login – “No composer data handle found” Error

Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Hi everyone,

I’ve been using Cursor for several months without any major issues, but tonight something strange happened. The chat suddenly stopped responding and displayed a message about a VPN — I’m not on a VPN, and my internet connection was fine. i have more than ample storage space north of 1Tb free.

I closed and restarted the app as I normally do, but when it reopened, it unexpectedly asked me to log in again. After signing in, all my project files reloaded, but my most recent chat session disappeared from history.

Normally (since the recent update), when I reopen Cursor it starts a new chat, and I can go to History to reopen the one I was working on. But after this forced re-login, that chat no longer appears. Only a few older chats are visible, and when I click them, it just says “Loading chat…” forever.

Now, only one old chat from months ago and a new blank chat window are showing.
The console also shows this error:

[composer] No composer data handle found

This is a major problem — I’ve been working on a specific project using that chat and now I’m completely stuck. Has anyone run into this or found a fix? Clearing cache and restarting didn’t help.

Any help or insight would be greatly appreciated.

Steps to Reproduce

i cannot reproduce the bug.

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.7.52 (user setup)
VSCode Version: 1.99.3
Commit: 9675251a06b1314d50ff34b0cbe5109b78f848c0
Date: 2025-10-17T01:41:03.967Z
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

For AI issues: which model did you use?

auto

Does this stop you from using Cursor

Yes - Cursor is unusable

2

There are other users that have had this same issue. why is it not being addressed with a solution?

3

Hey, thanks for the report, and sorry you ran into this.

This matches a known bug in the Agent Window beta. A fix is confirmed for Cursor v1.8 to prevent it in the future.

Unfortunately, once this bug triggers, lost chats can’t be recovered.

If you have backups:

  • If you have backups of %APPDATA%\Cursor\User\globalStorage\state.vscdb or %APPDATA%\Cursor\User\workspaceStorage, close Cursor and replace those files to try restoring some history.

Going forward:

  • Use Export Chat regularly for important conversations
  • Consider the SpecStory extension for automatic exports
  • Keep regular backups of the folders above
1 Like
4

same here, all my history gone!