POSTS / WSL: A localhost proxy configuration was detected but not mirrored into WSL. WSL in NAT mode does not support localhost proxies.

refer to Issue:

1. Open or create the wsl configuration file (located at %USERPROFILE%\.wslconfig), and enter the following content:

[experimental]
autoMemoryReclaim=gradual  # gradual  | dropcache | disabled
networkingMode=mirrored
dnsTunneling=true
firewall=true
autoProxy=true

2. Open the command prompt and execute wsl --shutdown

ref: https://github.com/microsoft/WSL/releases/tag/2.0.0

works for me but brought one new problem: my docker engine can’t start in WSL2. if i run a simple docker command then i’ll get a The command 'docker' could not be found in this WSL 2 distro.

i just delete the .wslconfig and ignore the warning while starting WSL2…

then following this reply, i tried to set networkingMode=NAT and autoProxy=false, but still failed to start docker container with permission error: Ports are not available.

further check is needed, following links may be helpful:

1. wsl networking guideline.
2. microsoft related issue.

since i found that WSL cannot use proxies from the host and docker reports

Cannot start Docker Compose application.
Reason: compose [start] exit status 1.
wsl: A localhost proxy configuration was detected but not mirrored into WSL. WSL in NAT mode does not support localhost proxies.
Container ... Starting Error response from daemon:
    Ports are not available: 
    exposing port TCP 127.0.0.1:5901 -> 0.0.0.0:0: 
    listen tcp 127.0.0.1:5901: 
    bind: An attempt was made to access a socket in a way forbidden by its access permissions.

then i retry the config mentioned before and this time it works. i think there must be some mystery fixes after i wrote this page. anyway, it works now.