Anysphere remote ssh doesn't work well and can't connect to remote hosts. This hasn't happened before when using the VSCode version

Bug Reports
1
  • Remote - SSH Notes
Connection to Cursor server failed: Failed to install the Cursor Server. Please check the logs for more details.
from: Remote - SSH
  • Remote - SSH Output
[Trace  - 07:14:41.501] (ssh_tunnel) stderr: debug1: Remote: /home/zwhy/.ssh/authorized_keys:1: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding

[Trace  - 07:14:41.517] (ssh_tunnel) stderr: debug1: Remote: /home/zwhy/.ssh/authorized_keys:1: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding

[Trace  - 07:14:41.517] (ssh_tunnel) stderr: debug1: Sending command: bash --login -c 'echo "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

[Trace  - 07:14:41.528] (ssh_tunnel) stderr: debug1: client_global_hostkeys_prove_confirm: server used untrusted RSA signature algorithm ssh-rsa for key 0, disregarding

[Trace  - 07:14:41.530] (ssh_tunnel) stderr: debug1: update_known_hosts: known hosts file /home/28678/.ssh/known_hosts2 does not exist
debug1: pledge: network

[Trace  - 07:14:41.530] (ssh_tunnel) stderr: debug1: client_input_channel_req: channel 2 rtype exit-status reply 0
debug1: client_input_channel_req: channel 2 rtype [email protected] reply 0

[Trace  - 07:14:41.530] (ssh_tunnel) stderr: bash: -c: 行 0: 寻找匹配的“'”时遇到了未预期的文件结束符
bash: -c: 行 1: 语法错误: 未预期的文件结尾
debug1: channel 2: free: client-session, nchannels 3
debug1: channel 0: free: port listener, nchannels 2
debug1: channel 1: free: port listener, nchannels 1
Transferred: sent 12288, received 3788 bytes, in 0.1 seconds
Bytes per second: sent 103384.8, received 31870.3
debug1: Exit status 1

[Trace  - 07:14:41.532] (ssh_tunnel): exit: code=1 signal=null
[Error  - 07:14:41.533] Error installing server:
Error: Failed to install the Cursor Server. Please check the logs for more details.
	at Ir (c:\Users\28678\.cursor\extensions\anysphere.remote-ssh-1.0.2\dist\main.js:1:218666)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async c:\Users\28678\.cursor\extensions\anysphere.remote-ssh-1.0.2\dist\main.js:1:269701
[Error  - 07:14:41.533] Error resolving SSH authority
Error: Failed to install the Cursor Server. Please check the logs for more details.
	at Ir (c:\Users\28678\.cursor\extensions\anysphere.remote-ssh-1.0.2\dist\main.js:1:218666)
	at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
	at async c:\Users\28678\.cursor\extensions\anysphere.remote-ssh-1.0.2\dist\main.js:1:269701
  • ChatGPT output
This long echo command is likely an attempt by the cursor plugin to send a Base64 encoded or shell script string via SSH to a remote machine for execution. Due to the presence of quotation marks'... 'in the string, if:

The quotation marks are not properly escaped

The string is truncated during concatenation

There are bugs or environment variables in the plugin that disrupt the original structure

An unexpected file ending error will appear.
  • extensions.json
[
    {
        "name": "anysphere.remote-containers",
        "version": "1.0.4"
    },
    {
        "name": "ms-ceintl.vscode-language-pack-zh-hans",
        "version": "1.96.2024121109"
    },
    {
        "name": "emilast.logfilehighlighter",
        "version": "3.4.0"
    },
    {
        "name": "ms-toolsai.vscode-jupyter-slideshow",
        "version": "0.1.6"
    },
    {
        "name": "ms-toolsai.vscode-jupyter-cell-tags",
        "version": "0.1.9"
    },
    {
        "name": "ms-toolsai.jupyter",
        "version": "2024.11.0"
    },
    {
        "name": "ms-toolsai.jupyter-renderers",
        "version": "1.1.0"
    },
    {
        "name": "vadimcn.vscode-lldb",
        "version": "1.11.5"
    },
    {
        "name": "llvm-vs-code-extensions.vscode-clangd",
        "version": "0.1.33"
    },
    {
        "name": "ms-vscode.cmake-tools",
        "version": "1.20.53"
    },
    {
        "name": "anysphere.cursorpyright",
       "version": "1.0.2"
    },
    {
        "name": "ms-python.vscode-pylance",
        "version": "2024.8.1"
    },
    {
        "name": "anysphere.cpptools",
        "version": "2.0.0"
    },
    {
        "name": "donjayamanne.python-extension-pack",
        "version": "1.7.0"
    },
    {
        "name": "ms-vscode.cpptools-extension-pack",
        "version": "1.3.1"
    },
    {
        "name": "ms-toolsai.jupyter-keymap",
        "version": "1.1.2"
    },
    {
        "name": "ms-vscode.cpptools-themes",
        "version": "2.0.0"
    },
    {
        "name": "llvm-vs-code-extensions.vscode-clangd",
        "version": "0.1.33"
    },
    {
        "name": "nvidia.nsight-vscode-edition",
        "version": "2024.1.34572442"
    },
    {
        "name": "docker.docker",
        "version": "0.7.0"
    },
    {
        "name": "076923.python-image-preview",
        "version": "0.1.2"
    },
    {
        "name": "bierner.markdown-mermaid",
        "version": "1.28.0"
    },
    {
        "name": "ms-toolsai.vscode-jupyter-slideshow",
        "version": "0.1.6"
    },
    {
        "name": "kevinrose.vsc-python-indent",
        "version": "1.21.0"
    },
    {
        "name": "ms-toolsai.vscode-jupyter-cell-tags",
        "version": "0.1.9"
    },
    {
        "name": "ms-toolsai.jupyter-renderers",
        "version": "1.1.0"
    },
    {
        "name": "donjayamanne.githistory",
        "version": "0.6.20"
    },
    {
        "name": "ms-vscode.makefile-tools",
        "version": "0.12.17"
    },
    {
        "name": "ms-vscode.hexeditor",
        "version": "1.11.1"
    },
    {
        "name": "mechatroner.rainbow-csv",
        "version": "3.19.0"
    },
    {
        "name": "bpruitt-goddard.mermaid-markdown-syntax-highlighting",
        "version": "1.7.1"
    },
    {
        "name": "mhutchie.git-graph",
        "version": "1.30.0"
    },
    {
        "name": "shd101wyy.markdown-preview-enhanced",
        "version": "0.8.18"
    },
    {
        "name": "intellsmi.comment-translate",
        "version": "3.0.0"
    },
    {
        "name": "ms-toolsai.datawrangler",
        "version": "1.22.0"
    },
    {
        "name": "ms-python.pylint",
        "version": "2025.2.0"
    },
    {
        "name": "ms-vscode.cmake-tools",
        "version": "1.20.53"
    },
    {
        "name": "ms-vscode.cpptools",
        "version": "1.25.3"
    },
    {
        "name": "ms-python.python",
        "version": "2025.6.1"
    },
    {
        "name": "ms-python.debugpy",
        "version": "2025.8.0"
    },
    {
        "name": "wholroyd.jinja",
        "version": "0.0.8"
    },
    {
        "name": "ms-azuretools.vscode-containers",
        "version": "2.0.2"
    },
    {
        "name": "ms-azuretools.vscode-docker",
        "version": "2.0.0"
    },
    {
        "name": "anysphere.remote-wsl",
        "version": "1.0.1"
    },
    {
        "name": "anysphere.remote-ssh",
        "version": "1.0.2"
    },
    {
        "name": "redhat.vscode-yaml",
        "version": "1.18.0"
    },
    {
        "name": "redhat.vscode-xml",
        "version": "0.29.0"
    },
    {
        "name": "ms-vscode-remote.vscode-remote-extensionpack",
        "version": "0.26.0"
    },
    {
        "name": "ms-vscode-remote.remote-ssh-edit",
        "version": "0.87.0"
    },
    {
        "name": "ms-vscode.remote-explorer",
        "version": "0.5.0"
    },
    {
        "name": "ms-vscode.remote-server",
        "version": "1.6.2025041509"
    }
]
  • device
master : windows 11
remote : ubuntu20.04
network: They all use proxies, but curl google.com works fine
3

After uninstalling all Anysphere-related plugins, you can restore the environment by manually installing the following extensions:

ms-azuretools.vscode-docker-1.29.6.vsix

ms-vscode-remote.remote-containers-0.397.0.vsix

ms-vscode-remote.remote-ssh-0.113.1.vsix

I connect to the target machine via SSH and use Dev Containers to attach Cursor to a Docker container. These three extensions need to work together as a set for this workflow.

I hope the official team can fix the maintained plugin repository to make it easier for users to use Cursor in this kind of setup.

1 Like
5

Hi! Thanks for sharing this issue. It looks like the setup command was truncated. On your remote machine, can you run getconf ARG_MAX? This won’t change anything but will help narrow down the cause.

6

I ran this command both on the host machine and inside Docker containers. Additionally, to rule out environment-specific issues, I tested this on three different remote machines, all running Ubuntu 20.04.5 LTS installed from the official ISO without any onfiguration changes.All of them produced the same result.

zwhy@ThinkStation-P3-Tower:~$ getconf ARG_MAX
2097152

Thank you for your response — I genuinely hope Cursor continues to improve!