Disable Microsoft Edge's rounded borders with this temporary fix

Microsoft Edge’s latest update—version 149 and higher—introduces rounded window borders as the default setting. Unfortunately for users who prefer sharp edges, Microsoft has also removed the toggle from the browser’s experimental features page, leaving no straightforward way to disable the change. If you rely on Edge as your default browser and want to revert to the classic design, follow these steps for a temporary workaround.

While this method isn’t permanent, it effectively removes rounded borders for your current session. If you’d like Microsoft to reintroduce an official option, consider sharing your feedback on the Microsoft Feedback Portal to increase visibility for the feature request.

Why Microsoft Edge’s rounded borders are a sticking point

Rounded window borders may seem like a minor aesthetic tweak, but they disrupt workflows for users accustomed to clean, straight edges. The change arrived with Edge version 149, and Microsoft’s decision to remove the toggle from edge://flags means traditional settings adjustments no longer apply. Whether you work in coding, design, or general productivity, the rounded borders can feel jarring—and for some, even distracting.

The workaround below provides a quick fix, but it’s important to note that Microsoft could integrate this feature permanently in future updates. Until then, manual intervention remains the only reliable solution.

How to disable rounded borders in Microsoft Edge on Windows

This process involves killing all active Edge processes and relaunching the browser with a specific command-line flag. The steps are simple but require attention to detail to ensure success.

Step 1: Terminate all Microsoft Edge processes

Before applying the workaround, close every instance of Microsoft Edge running on your system. You can do this manually through the Task Manager:

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Locate any processes labeled Microsoft Edge or msedge.exe.
3. Right-click each process and select End Task.

Alternatively, use Command Prompt for a faster approach. Run the following command to check for and terminate any running Edge processes:

tasklist /FI "IMAGENAME eq msedge.exe" 2>NUL | find /I /N "msedge.exe" >NUL
if "%ERRORLEVEL%"=="0" (
    echo Killing msedge.exe...
    taskkill /F /IM msedge.exe
) else (
    echo msedge.exe is not running.
)

Step 2: Launch Edge without rounded borders

With all Edge processes closed, open Command Prompt and enter the following command to restart the browser without rounded borders:

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --enable-features=msForceNoRoundedCornerAndMargin

This command forces Edge to launch with the msForceNoRoundedCornerAndMargin flag, effectively disabling the rounded borders for the current session. The change persists only until you close all Edge windows.

Automate the process with a batch script

Manually running commands every time you open Edge can be tedious. To streamline the process, create a simple batch file that automates both the termination and relaunch steps. Here’s how to set it up:

1. Open Notepad or any text editor.
2. Copy and paste the following script:

@echo off
REM Terminate all Microsoft Edge processes
tasklist /FI "IMAGENAME eq msedge.exe" 2>NUL | find /I /N "msedge.exe" >NUL
if "%ERRORLEVEL%"=="0" (
    echo Killing msedge.exe...
    taskkill /F /IM msedge.exe
) else (
    echo msedge.exe is not running.
)
REM Launch Microsoft Edge without rounded borders
start "" "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --enable-features=msForceNoRoundedCornerAndMargin

1. Save the file as launch_edge_no_rounded.bat in a convenient location, such as your Desktop or Documents folder.
2. Double-click the file whenever you want to open Edge without rounded borders.

This script ensures a consistent experience each time you launch Edge, eliminating the need to remember manual commands.

What’s next for Microsoft Edge’s window design?

Microsoft has not yet confirmed whether rounded borders will become a permanent fixture or if an official toggle will return in future updates. User feedback plays a key role in influencing these decisions, so sharing your experience on platforms like the Microsoft Feedback Portal can help drive change. Until then, the workaround above remains the most reliable method to revert to a traditional window design in Edge.

If you discover a more permanent solution or encounter issues with the steps outlined here, consider sharing your findings in the comments. The tech community thrives on collaboration, and your insights could benefit others facing the same challenge.

For now, this temporary fix provides a practical workaround—one that keeps your workflow smooth until Microsoft addresses the issue directly.