Remote-WSL - failed to connect to the remote extension host server

[ghost]

Issue Type: Bug

I couldn't file this against the extension as in VS Code, the "Extension" dropdown is blank

[2019-12-21 04:55:01.908] Resolving wsl+WLinux, resolveAttempt: 1
[2019-12-21 04:55:01.954] Starting VS Code Server inside WSL (WLinux)
[2019-12-21 04:55:01.954] Extension version: 0.41.6, Windows build: 19536. Multi distro support: available. WSL path support: enabled
[2019-12-21 04:55:02.116] Probing if server is already installed: C:\WINDOWS\System32\wsl.exe -d WLinux -e sh -c "[ -d ~/.vscode-server/bin/26076a4de974ead31f97692a0d32f90d735645c0 ] && printf found || ([ -f /etc/alpine-release ] && printf alpine-; uname -m)"
[2019-12-21 04:55:02.245] Probing result: x86_64
[2019-12-21 04:55:02.245] No server install found in WSL, needs x64
[2019-12-21 04:55:02.245] Downloading server on client side to C:\Users\Adam\AppData\Local\Temp\vscode-remote-wsl\26076a4de974ead31f97692a0d32f90d735645c0\vscode-server-linux-x64.tar.gz.
[2019-12-21 04:55:02.246] https://update.code.visualstudio.com/commit:26076a4de974ead31f97692a0d32f90d735645c0/server-linux-x64/stable
[2019-12-21 04:55:03.247] Download checksum: 87f8453ce290331bd66ca7caa9c9b966ea964b9bdac60e2c209479176f1ca54c
[2019-12-21 04:55:05.867] Download checksum verified
[2019-12-21 04:55:05.868] Launching C:\WINDOWS\System32\wsl.exe -d WLinux sh -c '"$VSCODE_WSL_EXT_LOCATION/scripts/wslServer.sh" 26076a4de974ead31f97692a0d32f90d735645c0 stable .vscode-server 0  ' in c:\Users\Adam\.vscode\extensions\ms-vscode-remote.remote-wsl-0.41.6
[2019-12-21 04:55:06.090] Setting up server environment: Looking for /home/voltagex/.vscode-server/server-env-setup. Not found.
[2019-12-21 04:55:06.090] WSL version: 4.19.81-microsoft-standard WLinux
[2019-12-21 04:55:06.090] Installing VS Code Server from tar available at /mnt/c/Users/Adam/AppData/Local/Temp/vscode-remote-wsl/26076a4de974ead31f97692a0d32f90d735645c0/vscode-server-linux-x64.tar.gz
[2019-12-21 04:55:07.016] Unpacking:   0%
[2019-12-21 04:55:07.318]   1%  2%  3%  4%  5%  6%  7%  8%  9% 10% 11%
[2019-12-21 04:55:07.620]  12% 13% 14% 15% 16% 17% 18% 19% 20% 21% 22% 23% 24% 25% 26% 27% 28% 29% 30% 31% 32% 33% 34% 35% 36% 37% 38% 39% 40% 41% 42% 43% 44% 45% 46% 47% 48% 49% 50% 51% 52% 53% 54% 55% 56% 57% 58% 59% 60% 61% 62%
[2019-12-21 04:55:07.928]  63% 64% 65% 66% 67% 68% 69% 70% 71% 72% 73% 74% 75% 76% 77% 78% 79% 80% 81% 82% 83% 84% 85% 86% 87% 88% 89% 90% 91% 92% 93% 94% 95% 96% 97% 98% 99%100%
[2019-12-21 04:55:07.928] Unpacked 2370 files and folders to /home/voltagex/.vscode-server/bin/26076a4de974ead31f97692a0d32f90d735645c0.
[2019-12-21 04:55:07.928] WSL2-shell-PID: 68
[2019-12-21 04:55:07.928] Starting server: /home/voltagex/.vscode-server/bin/26076a4de974ead31f97692a0d32f90d735645c0/server.sh  --port=0 --enable-remote-auto-shutdown 
[2019-12-21 04:55:07.928] 
[2019-12-21 04:55:07.928] 
[2019-12-21 04:55:07.928] *
[2019-12-21 04:55:07.928] * Visual Studio Code Server
[2019-12-21 04:55:07.928] *
[2019-12-21 04:55:07.928] * Reminder: You may only use this software with Visual Studio family products,
[2019-12-21 04:55:07.928] * as described in the license https://aka.ms/vscode-remote/license
[2019-12-21 04:55:07.928] *
[2019-12-21 04:55:07.928] 
[2019-12-21 04:55:07.928] 
[2019-12-21 04:55:08.238] IP Address: 172.19.172.180
[2019-12-21 04:55:08.238] Extension host agent listening on 38057
[2019-12-21 04:55:08.238] 
[2019-12-21 04:55:08.238] 
[2019-12-21 04:55:08.238] [15:55:08] Extension host agent started.
[2019-12-21 04:55:08.240] WSL resolver response: ::1:38057
[2019-12-21 04:55:08.240] To debug connection issues, open a local browser on http://[::1]:38057/version

Sorry if this is a duplicate - I saw similar issues but they were closed or had unrelated causes.

I have also tried this on the Insider version and got the same problem

VS Code version: Code 1.41.1 (26076a4de974ead31f97692a0d32f90d735645c0, 2019-12-18T14:58:56.166Z)
OS version: Windows_NT x64 10.0.19536
Fetching remote diagnostics for 'WSL: WLinux' failed: connect ECONNREFUSED ::1:38057

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6800K CPU @ 3.40GHz (12 x 3400)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off surface_control: disabled_off surface_synchronization: enabled_on video_decode: enabled viz_display_compositor: enabled_on viz_hit_test_surface_layer: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	63.90GB (49.81GB free)
Process Argv
Screen Reader	no
VM	0%

Fetching remote diagnostics for 'WSL: WLinux' failed: connect ECONNREFUSED ::1:38057

Extensions: none

Version: 1.41.1 (user setup)
Commit: 26076a4de974ead31f97692a0d32f90d735645c0
Date: 2019-12-18T14:58:56.166Z
Electron: 6.1.5
Chrome: 76.0.3809.146
Node.js: 12.4.0
V8: 7.6.303.31-electron.0
OS: Windows_NT x64 10.0.19536 - Windows Insider

• Remote OS Version: Pengwin 10
• Remote Extension/Connection Type: Remote WSL - WSL2

Steps to Reproduce:

1. Install WLinux / Pengwin
2. Try to use/install an extension in a WSL remote

Does this issue occur when you try this locally?: N/A
Does this issue occur when you try this locally and all extensions are disabled?: N/A

[ghost]

Probably a duplicate of #2037