WSL Cheatsheet

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

No Network #

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

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Solution 1: `resolv.conf` #

https://github.com/microsoft/WSL/issues/6404#issuecomment-810538101

It seems lounching VSCode daemon messes things up
Setup below helped me, thanks guys:
/etc/wsl.conf
[network]
generateResolvConf = false
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Shutdown wsl
wsl --shutdown
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Start wsl, delete /etc/resolv.conf symbolic link and create a file instead: /etc/resolv.conf
nameserver 8.8.8.8
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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.

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