Win11 Toggle Rounded Corners oberrich
Use this command to install Win11 Toggle Rounded Corners:
winget install --id=oberrich.win11-toggle-rounded-corners -e
A simple utility to disable rounded window corners on Windows 11
README
Win11 Toggle Rounded Corners
A simple utility to disable rounded window corners on Windows 11

Download
An installer as well as the standalone binary for portable use can be downloaded here.
The program requires administrator privileges.
Some Anti-Virus products may block the access to dwm.exe
Build
First clone the repo recursively
git clone --recursive 'https://github.com/oberrich/win11-toggle-rounded-corners.git'
Then simply build it with meson
meson setup build
meson compile -C build