WSL Cheatsheet

[AllanChain]

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WSL issues or tricks I had to search for again and again

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No Network

ping: socket: Operation not permitted
Temporary failure in name resolution

Solution 1: resolv.conf

microsoft/WSL#6404 (comment)

It seems lounching VSCode daemon messes things up

Setup below helped me, thanks guys:

1. /etc/wsl.conf

[network]
generateResolvConf = false

2. Shutdown wsl

wsl --shutdown

3. Start wsl, delete /etc/resolv.conf symbolic link and create a file instead:
   /etc/resolv.conf

nameserver 8.8.8.8

But this solution ruins mDNS.

Solution 2: Check Firewall

If the DNS works after disabling Firewall, try allowing 172.16.0.0/12 inbound in Windows Defender.

Run Linux GUI apps on the Windows Subsystem for Linux

https://docs.microsoft.com/en-us/windows/wsl/tutorials/gui-apps

Hyper-V & Reserved Ports

https://hungyi.net/posts/wsl2-reserved-ports/

Run netsh int ipv4 show excludedportrange protocol=tcp to show reserved ports.

1. Run netsh int ipv4 set dynamic tcp start=51001 num=5000 to reset the dynamic port range.
2. Run reg add HKLM\SYSTEM\CurrentControlSet\Services\hns\State /v EnableExcludedPortRange /d 0 /f to disable the HNS port exclusion behavior.
3. Reboot