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How to disable "Rounded Corners" around browser web content in the latest Microsoft Edge update?

hirun 60 Reputation points
2026-06-06T17:38:14.34+00:00

Hi,

As shown in the attached screenshot, the latest Edge update (Version 149.0.4022.52) has forced a white border/rounded corners around the browser window.

This UI element is very distracting. I have checked both Settings > Appearance and edge://flags, but the option to disable "rounded corners" has been completely removed from my version.

Questions:

Is there a Registry key to disable this border?

Why was the toggle removed from the settings?

Please provide a way to get back the square, edge-to-edge view. I want the web content to touch the browser edges like before.

Thank you.Screenshot 2026-06-07 003113

Microsoft Edge | Tabs, address bar, and search | Windows 10

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  1. Paulo GM 66,795 Reputation points Independent Advisor
    2026-06-06T18:32:37.0166667+00:00

    Hi,

    The flag to disable rounded corners has been removed starting with version 149. This means that Microsoft is permanently applying the said feature throughout the browser to align with Edge and Windows 11 design.

    A temporary workaround for this is to disable it using a launch parameter. Right-click your Edge shortcut, select Properties, and add the parameter to the end of the Target field.

    Keep in mind that this is only a temporary fix and may stop working in a future version of Edge. Because of that, I recommend also looking for an alternative workaround in case this method is eventually removed.

    --disable-features=msFeatureGroupNewLookAndFeelHoldout

    Screenshot 2026-06-07 012230

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  2. PK 0 Reputation points
    2026-06-08T09:44:35.77+00:00

    This is actually a reason for me to swap browsers, I hope MS adds an option to let us disable the rounded outer frame.

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  3. Christian Karsch 0 Reputation points
    2026-06-08T08:17:55.8266667+00:00

    I absolutely hate those rounded inside corners, too. It’s a real shame when even the last option for getting rid of those rounded corners is removed.

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  4. Heku 0 Reputation points
    2026-06-08T12:12:37.3033333+00:00

    Always made wrong decision, always ignore users' voices, always indulge in self-complacency.

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  5. 지누 김 0 Reputation points
    2026-06-08T16:59:35.2233333+00:00

    MicroSoft..... Why is this being forced on users with no way to opt out?

    Plenty of people don't find this design attractive.

    You already had a working solution — the flag that let us choose.

    Removing that choice and imposing one look on everyone is exactly why you're getting so much backlash.

    Bring back the option to disable rounded corners.

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