How to disable case sensitivity on WSL 1803?

[gordonwang0]

Please fill out the below information:

• Your Windows build number: (Type ver at a Windows Command Prompt)
  Microsoft Windows [Version 10.0.17134.112]

• What you're doing and what's happening: (Copy&paste specific commands and their output, or include screen shots)
  I use git clone on Ubuntu WSL to clone a repo. This repo has a Visual Studio 2017 solution file in it. But the solution fails to build because of the new case-sensitive file system.

• What's wrong / what should be happening instead:
  The compiler (MSVC) is unable to find files in the project because of case sensitivity. (A zip downloaded from github on Windows works fine). Also, running fsutil to disable case sensitivity on directories fixed the issue.

I have tried using the following /etc/wsl.conf file, but it doesn't seem to have any effect (I don't see case=off on /mnt/c when I run mount in Ubuntu).

[automount]
enabled = true
options = "case=off"

What am I doing wrong with /etc/wsl.conf? Also -- would you consider defaulting case-sensitivity to OFF? Upon updating Windows, I encountered several errors with files used on both Ubuntu and Windows. It took several hours to trace it to the case sensitivity change, as the errors simply say "file not found".

[0xbadfca11]

Did you shutdown all WSL processes?
wsl.conf only applies when init (PID equal to 1) is launched.
Just stop all WSL processes anyway or restart Windows.

[gordonwang0]

Restarting Windows fixed it. Thanks.

[bonniesimon]

[automount]
enabled = true
options = "case=off"

Where should I type these commands exactly?
Asking since its 2 years since the original question.