_z_precmd:1: nice(5) failed: operation not permitted

[skywind3000]

z.sh prompts

_z_precmd:1: nice(5) failed: operation not permitted

everytime after pressing enter on "Bash for Windows", my shell is zsh

[agkozak]

By default, zsh tries to run background jobs at a lower priority, which Windows won't let it do. A good workaround is to put

case $(uname -a) in
   *Microsoft*) unsetopt BG_NICE ;;
esac

in your .zshrc file. That alters zsh's default behavior and fixes the problem entirely, in my experience.

[skywind3000]

It works, thanks !!

[laurentlucian]

If the upvoted response doesn't work for you, try putting

# Avoid background processes to not bother Windows
unsetopt BG_NICE

in you .zshrc file.