Dev container Incompatible with Remote - tunnel?

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I’m trying to set up Dev Container on a remote machine connected through Remote - Tunnels. I got the error pop up in the GUI “Anysphere Remote Containers requires the Anysphere remote extensions. Please install the Anysphere Remote extensions and try again.”. When I tried “Dev Containers: Reopen in Container”, the same error showed up in Output - Dev Containers. It is unclear which “Anysphere Remote extensions” I should install and where I can find them.

Steps to Reproduce

Use Remote - Tunnels to connect to a remote machine and run “Dev Containers: Reopen in Container”.

Expected Behavior

Successfully reopen workspace in dev container.

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.4.5 (user setup)
VSCode Version: 1.99.3
Commit: af58d92614edb1f72bdd756615d131bf8dfa5290
Date: 2025-08-13T02:08:56.371Z
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

Additional Information

Relevant extensions local installed
anysphere.remote-containers 1.0.22
ms-vscode.remote-server 1.5.2
Neither of these extensions are installed on the remote host. There seems no way to install it to the remote host.

Does this stop you from using Cursor

Yes - Cursor is unusable