Failed to connect to the remote extension host server due to unsupported, out of date libraries like glibc (e.g. older CentOS version)

[wqfan]

• VSCode Version: Version 1.34.0-insider (1.34.0-insider)
• Local OS Version: macOS 10.14.4 (18E226)
• Remote OS Version: Amazon Linux Bare Metal release 2012.03
• Remote Extension/Connection Type: SSH

Steps to Reproduce:

1. Cmd-Shift-P, and choose Remote-SSH: Connect current window to host...
2. Connection is successful. Remote tools are installed and server is running on remote
3. VS Code shows an error at right-bottom: Failed to connect to the remote extension host server (Error: Connection error: Unauthorized client refused.)

AllowTcpForwarding is enabled on the remote server.

Here is the full output from "Remote - SSH" channel:

SSH Resolver called for "ssh-remote+dev-server"
SSH Resolver called for host: dev-server
Setting up SSH remote "dev-server"
Using commit id "473af338e1bd9ad4d9853933da1cd9d5d9e07dc9" and quality "insider" for server
Install and start server if needed
> bash: no job control in this shell
> Found existing installation...
> Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ
> Found running server...
>  
> *
> * Reminder: You may only use this software with Visual Studio family products,
> * as described in the license (https://go.microsoft.com/fwlink/?linkid=2077057)
> *
>  
> bb80525e-2122-4fa5-8e4a-9d91821eeb83==45539==
"install" terminal command done
Received install output: bb80525e-2122-4fa5-8e4a-9d91821eeb83==45539==
Server is listening on port 45539
Spawning tunnel with: ssh  dev-server -N -L localhost:32546:localhost:45539
Spawned SSH tunnel between local port 32546 and remote port 45539
Waiting for ssh tunnel to be ready
Tunneling remote port 45539 to local port 32546
Resolving "ssh-remote+dev-server" to "localhost:32546", attempt: 1

Logs from "Log (Window)" channel:

[2019-05-03 18:02:25.843] [renderer1] [error] Connection error: Unauthorized client refused.: Error: Connection error: Unauthorized client refused.
    at v (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:1544:9)
    at t.onControlMessage.o (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:1542:930)
    at d.fire (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:77:818)
    at a (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:321:48)
    at e (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:321:94)
    at d.fire (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:77:818)
    at S._receiveMessage (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:330:65)
    at S._socketDisposables.push._socketReader.onMessage.e (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:327:243)
    at d.fire (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:77:818)
    at g.acceptChunk (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:323:801)
    at _register._socket.onData.e (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:323:153)
    at Socket.t (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:332:235)
    at Socket.emit (events.js:182:13)
    at addChunk (_stream_readable.js:279:12)
    at readableAddChunk (_stream_readable.js:264:11)
    at Socket.Readable.push (_stream_readable.js:219:10)
    at TCP.onread (net.js:636:20)
[2019-05-03 18:02:25.844] [renderer1] [error] Cannot read property 'extensions' of null: TypeError: Cannot read property 'extensions' of null
    at e.<anonymous> (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:3850:751)
    at Generator.next (<anonymous>)
    at r (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:34:454)
    at process._tickCallback (internal/process/next_tick.js:68:7)
[2019-05-03 18:02:25.844] [renderer1] [error] Connection error: Unauthorized client refused.: Error: Connection error: Unauthorized client refused.
    at v (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:1544:9)
    at t.onControlMessage.o (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:1542:930)
    at d.fire (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:77:818)
    at a (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:321:48)
    at e (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:321:94)
    at d.fire (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:77:818)
    at S._receiveMessage (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:330:65)
    at S._socketDisposables.push._socketReader.onMessage.e (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:327:243)
    at d.fire (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:77:818)
    at g.acceptChunk (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:323:801)
    at _register._socket.onData.e (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:323:153)
    at Socket.t (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:332:235)
    at Socket.emit (events.js:182:13)
    at addChunk (_stream_readable.js:279:12)
    at readableAddChunk (_stream_readable.js:264:11)
    at Socket.Readable.push (_stream_readable.js:219:10)
    at TCP.onread (net.js:636:20)
[2019-05-03 18:02:28.207] [renderer1] [error] Could not fetch environment: Error: Could not fetch environment
    at d.getEnvironment.then.e (file:///Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/out/vs/workbench/workbench.main.js:3813:413)

Does this issue occur when you try this locally?: Yes
Does this issue occur when you try this locally and all extensions are disabled?: Yes

[roblourens]

@alexandrudima Unauthorized client refused comes from some kind of auth failure, what does that imply?

@wqfan You could try reinstalling by deleting the folder ~/.vscode-remote from the remote machine

[wqfan]

@roblourens Thanks for your follow up on this issue. I have tried deleting that folder a few times and it doesn't make any difference.

[lars18th]

Hi,

Identical problem.
Futhermore in the "new" VSCode window (when connecting with "Connect to host in new window") in the Terminal after all I see:

Connected to SSH Host - Please do not close this terminal

But the same error
Failed to connect to the remote extension host server (Error: Connection error: Unauthorized client refused.)

This doesn't have sense!

[lars18th]

Debug info:

This is my .vscode-remote/.473af338e1bd9ad4d9853933da1cd9d5d9e07dc9.log:

Remote configuration data at /root/.vscode-remote


*
* Visual Studio Code Server
*
* Reminder: You may only use this software with Visual Studio family products,
* as described in the license https://aka.ms/vscode-remote/license
*


Error: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.18' not found (required by /root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/node_modules/spdlog/build/Release/spdlog.node)
    at Object.Module._extensions..node (internal/modules/cjs/loader.js:731:18)
    at Module.load (internal/modules/cjs/loader.js:612:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
    at Function.Module._load (internal/modules/cjs/loader.js:543:3)
    at Module.require (internal/modules/cjs/loader.js:650:17)
    at Module.patchedRequire [as require] (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/node_modules/diagnostic-channel/dist/src/patchRequire.js:14:46)
    at require (internal/modules/cjs/helpers.js:20:18)
    at bindings (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/node_modules/bindings/bindings.js:81:44)
    at Object.<anonymous> (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/node_modules/spdlog/index.js:3:35)
    at Module._compile (internal/modules/cjs/loader.js:702:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
    at Module.load (internal/modules/cjs/loader.js:612:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
    at Function.Module._load (internal/modules/cjs/loader.js:543:3)
    at Module.require (internal/modules/cjs/loader.js:650:17)
    at Module.patchedRequire [as require] (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/node_modules/diagnostic-channel/dist/src/patchRequire.js:14:46)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Function.i [as __$__nodeRequire] (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:31:542)
    at Object.t.createSpdLogService (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:213:301)
    at G.<anonymous> (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:363:833)
    at Generator.next (<anonymous>)
    at /root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:16:388
    at new Promise (<anonymous>)
    at r (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:16:165)
    at G._createServices (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:363:624)
    at Function.create (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:363:554)
    at T.<anonymous> (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:370:597)
    at Generator.next (<anonymous>)
    at /root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:16:388
    at new Promise (<anonymous>)
    at r (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:16:165)
    at T.start (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:370:516)
    at Object.<anonymous> (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.js:379:52)
    at Function.t._safeInvokeFunction (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:20:173)
    at Function.t._invokeFactory (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:20:420)
    at t.complete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:20:657)
    at s._onModuleComplete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:30:796)
    at s._onModuleComplete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:31:41)
    at s._onModuleComplete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:31:41)
    at s._onModuleComplete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:31:41)
    at s._onModuleComplete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:31:41)
    at s._onModuleComplete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:31:41)
    at s._resolve (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:30:356)
    at s.defineModule (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:24:768)
    at r (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:28:919)
    at Object.l (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:36:405)
    at Function.t._safeInvokeFunction (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:20:173)
    at Function.t._invokeFactory (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:20:420)
    at t.complete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:20:657)
    at s._onModuleComplete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:30:796)
    at s._onModuleComplete (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:31:41)
    at s._resolve (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:30:356)
    at s.defineModule (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:24:768)
    at r (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:31:950)
    at f (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:17:524)
    at Object.<anonymous> (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/agent/remoteExtensionHostAgent.nls.js:4:1)
    at t._loadAndEvalScript (/root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:17:568)
    at /root/.vscode-remote/bin/473af338e1bd9ad4d9853933da1cd9d5d9e07dc9/out/vs/loader.js:17:285
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:440:3)
IP Address: 192.168.1.142
Extension host agent listening on 56216
{ [Error: ENOENT: no such file or directory, scandir '/root/.vscode-remote/data/logs']
  errno: -2,
  code: 'ENOENT',
  syscall: 'scandir',
  path: '/root/.vscode-remote/data/logs' }
Unauthorized client refused.
Unauthorized client refused.
Unauthorized client refused.
Unauthorized client refused.
Unauthorized client refused.
Unauthorized client refused.
Unauthorized client refused.
Unauthorized client refused.

I hope it can be fixed soon. 😢

[u3u]

The same problem.
When I remove the ~/.vscode-remote directory reconnect prompts the following error:

> cat: ~/.vscode-remote/.473af338e1bd9ad4d9853933da1cd9d5d9e07dc9.log: No such file or directory
> Server did not start successfully. Full server log:
> cat: ~/.vscode-remote/.473af338e1bd9ad4d9853933da1cd9d5d9e07dc9.log411693af-6a8f-4de5-9053-7abf6ae26efe====
> : No such file or directory
"install" terminal command done
Received install output: : No such file or directory
Failed to parse remote port from server output: : No such file or directory

When I manually create the log file, connect the prompt again:
Could not establish connection to "server".

> Server did not start successfully. Full server log:
> 
> 127e184a-8aae-450a-9261-613691a553db====
"install" terminal command done
Received install output: 127e184a-8aae-450a-9261-613691a553db====
Failed to parse remote port from server output: 127e184a-8aae-450a-9261-613691a553db====

[kieferrm]

@wqfan it looks like you're running Amazon Linux Bare Metal release 2012.03. I'm guessing that's causing your issue. If possible, please try a Ubuntu 18.04.

@lars18th what server OS are you running.

[wqfan]

@kieferrm It can be a problem of the OS. Does the remote extension only work with Ubuntu? Unfortunately, this is the only development server I have and I can't change the OS.

My ~/.vscode-remote/.473af338e1bd9ad4d9853933da1cd9d5d9e07dc9.log is a bit different from @lars18th:

Remote configuration data at /home/qingfanw/.vscode-remote


*
* Visual Studio Code Server
*
* Reminder: You may only use this software with Visual Studio family products,
* as described in the license https://aka.ms/vscode-remote/license
*


IP Address: 172.22.135.15
Extension host agent listening on 38337
Unauthorized client refused.
Unauthorized client refused.

[wqfan]

@u3u I think you shouldn't remove the folder directly.

Try the Remote SSH: Uninstall VS Code Server from Host... command and then reinstall it with Remote-SSH: Connect current window to host....

[khuongduybui]

@wqfan I am not sure it's the OS. I just tried a public AL2012 EC2 instance (not AL2) and it worked just fine. (Of course it's named 2018.03 but we all know it's AL2012.)

So the first thing I checked is sshd version.
AL2012: OpenSSH_7.4p1, OpenSSL 1.0.1k-fips 8 Jan 2015
AL2018: OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017

Are we screwed because our super-legacy dev desktops still use OpenSSL 1.0.1 for sshd?

[wqfan]

@khuongduybui Thanks for your information. I have upgraded OpenSSL and been using OpenSSH:

$ openssl version                                                                                                                                    255 ↵
OpenSSL 1.0.2r  26 Feb 2019

$ sshd -V                                                                                                                                             1 ↵
OpenSSH_8.0p1, OpenSSL 1.0.2r  26 Feb 2019

The problem still exists.

[singerb]

Same version `GLIBCXX_3.4.18' not found issue, same unable to connect (this is after replacing the realpath with readlink -f in server.sh to allow the server to start). strings /usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIBC lists up to GLIBCXX_3.4.17, cat /etc/debian_version -> 7.9. Like many people, this is a sandbox environment and I don't have access to mess with the software on it. Perhaps a statically compiled node-spdlog would work?

[lars18th]

@lars18th what server OS are you running.

Debian 7 x64 sandbox. No other alternative.

Please, think on compile dependencies STATICALLY to resolve these problems.
Note too that I feel this issue is related to #84 .