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Microsoft Edge version 149.0.4022.52 (64-bit) FORCING rounded borders, what is the work-around?

Simon ‍ 25 Reputation points
2026-06-07T17:43:02.85+00:00

As others have already complained about, the latest Microsoft Edge update has removed the flag to turn off Rounded Borders in the browsing view, thus forcing them to remain on. This is obnoxious and intrusive and there are many inconveniences that come from the browsing window not reaching the edges of the screen. Why this is forced upon us with no way to turn it off is beyond me, but it is the reason I am now abandoning Edge for Firefox.

Once user suggested applying the launch parameter --disable-features=msFeatureGroupNewLookAndFeelHoldout, and while this technically works it leaves an ugly white border that is extremely noticeable with the dark theme and I would frankly rather have the rounded border than that, but I don't want the rounded border to begin with.

Is there another work-around that people have found, perhaps a registry key? I'll consider switching back if so, but otherwise I am just very disappointed by the slew of nonsense updates that only serve to drive the already dwindling userbase away.

Microsoft Edge | Install and update | Windows 11
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  1. Paulo GM 66,985 Reputation points Independent Advisor
    2026-06-08T07:26:29.43+00:00

    Hi,

    I totally get the frustration. A lot of users have been bringing up the same issue. If you haven't already, I'd suggest giving this feedback an upvote. The more support a request gets, the more likely it is to get noticed by the team and hopefully lead to restoring the option to disable it via edge://flags in a future update.

    https://feedbackportal.microsoft.com/feedback//idea/7e9fa301-22d1-f011-ad8f-7c1e52f38cbc

    For now, I have seen this thread from GitHub that might help you resolve it temporarily

    https://gist.github.com/intenzemotion/02961f50b4ad4ffe46e91829ad729a73

    Disclaimer: This is a non-Microsoft site. The information seems reliable, but be careful with ads. Research any product before downloading.

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  2. _AW_ 67,926 Reputation points Volunteer Moderator
    2026-06-08T08:24:13.96+00:00

    See if launching with the following parameters provides a better visual experience for the time being.

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

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  3. VarshaMishra-9108 0 Reputation points
    2026-06-08T04:34:42.23+00:00
    1. Check Edge Appearance settings
    2. Command-line workaround (temporary)
    3. Roll back to Edge 148
    4. Use Feedback

    As of Edge 149.0.4022.52, there does not appear to be an official supported way to permanently disable the rounded page border/corners. The old edge://flags options have reportedly been removed.

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