Win11DisableOrRestoreRoundedCorners is a free tool made by a developer named Valinet. It lets you swap the rounded corners of Windows 11 windows for the sharp, square look used in Windows 10.
Because Microsoft does not provide a built-in toggle for this, this utility works by changing a few bytes inside your system’s Desktop Window Manager files. How to Use the Tool
Before you start, make sure your computer has an active internet connection. The tool needs it to download specific system file details from Microsoft to apply the change correctly.
Create a Restore Point: Since this software edits core system files, it is highly recommended to save a backup restore point on your PC first.
Download the File: Go to the official Valinet GitHub Releases Page and download the file named Win11DisableOrRestoreRoundedCorners.exe.
Run as Administrator: Find the downloaded file in your downloads folder. Right-click it and choose Run as administrator.
Bypass SmartScreen: If a blue “Windows protected your PC” box pops up, click More info and then click Run anyway. Click Yes on the next pop-up window.
Refresh the Screen: A small command window will quickly open and close. Go to your desktop screen, right-click any empty spot, and click Refresh. Your open folders and apps will now feature sharp, classic corners. How to Undo the Changes
If you ever want to get your rounded corners back, the process is very simple.
Re-run the File: Just double-click the exact same Win11DisableOrRestoreRoundedCorners.exe file you downloaded earlier.
Automatic Restore: The tool will notice that you already used it, and it will safely revert your system files back to normal. Things to Keep in Mind
Limits: This app changes standard program windows like File Explorer. It will not remove rounded corners from the Start menu or some modern universal apps.
Windows Updates: Major Windows 11 updates might undo this change or cause the tool to stop working until a new patch is released by the developer. YouTube·Tech Enthusiast Make Windows 11 Look INSANE in Just 13 minutes!
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