Remote Extension host error

Support Help
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I tried to use cursor IDE to work and SSH to my AutoDL server only to find this messages: “Remote Extension host terminated unexpectedly 3 times within the last 5 minutes.” constantly appeared. After that, the cursor automatically terminate my connection, causing me unable to use anything. How can I fix this problem?

Steps to Reproduce

Open up the cursor and it appears.

Expected Behavior

Everything should work fine and the remote connection should be stable.

Screenshots / Screen Recordings

b0c551c9-2ecf-432a-8b8c-65dbee87ee39.png
b0c551c9-2ecf-432a-8b8c-65dbee87ee39.png1215×207 109 KB

Operating System

Linux

Version Information

Version: 3.12.30 (user setup)
VS Code Extension API: 1.128.0
Commit: 63a2996a10d9e476b6c28e951dd7691d9c0cf480
Date: 2026-07-21T22:50:03.568Z
Layout: IDE
Build Type: Stable
Release Track: Default
Electron: 40.10.3
Chromium: 144.0.7559.236
Node.js: 24.15.0
V8: 14.4.258.32-electron.0
xterm.js: 6.1.0-beta.256
OS: Windows_NT x64 10.0.26200

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

5

Hi there!

This error means the Cursor server process on your remote machine keeps crashing, usually because the server is running out of memory or disk space.

SSH in with a plain terminal and check what’s going on:

free -h
dmesg -T | grep -i -E "oom|killed process"   # was the process OOM-killed?
df -h                                          # is the system disk full?
du -sh ~/.cursor-server

It’s also worth trying a clean reinstall: disconnect, run rm -rf ~/.cursor-server on the server, then reconnect.

If you don’t find yourself memory/disk constrained, and it still crashes after a reinstall, please check the log from ~/.cursor-server/data/logs/<date>/exthost*/ and share them here!

7

Hi, thanks for the reply. By restart my server and re-install the cursor server the problem seems gone. Actually pretty weird.