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Edge uses 100% CPU on macos

WCR 200 Reputation points
2026-01-22T07:38:18.23+00:00

On M4 16 500 and only 20 tabs I get 100% CPU usage. Build 144.0.3719.82

Microsoft Edge | Browser crashes or stops working | MacOS

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  1. J Muzhen 40 Reputation points
    2026-01-27T14:26:41.4833333+00:00

    Same problem here, but I have discovered that turning "Use graphics acceleration when available" off solved the issue, at least for now.

    An educated guess - there may be some issue with the GPU process (WindowServer).

    7 people found this answer helpful.
  2. Jon Lin 20 Reputation points
    2026-01-26T11:15:37.0066667+00:00

    Supplement to WCR's solution:

    Previous versions path:

    ~/Library/Application Support/Microsoft/EdgeUpdater/apps/msedge-stable/

    or

    /Users/{your_user_name}/Library/Application Support/Microsoft/EdgeUpdater/apps/msedge-stable/

    Make sure your_user_name is replaced with your actual user name :D
    Detailed steps:

    1. Copy the old version before 144.0.3719.82 like 143.0.3650.139 to /Applications/, then rename it to Microsoft Edge_143.app. (The newly updated 144.0.3719.92 also has the same problem.)
    2. Quit Microsoft Edge.app.
    3. Open Microsoft Edge_143.app.
    4. Your opened tabs will remain.
    5. If you have a process-level firewall, ensure that EdgeUpdater is not allowed to access the network to prevent automatic updates. (Path: ~/Library/Application Support/Microsoft/EdgeUpdater/145.0.3785.0/EdgeUpdater.app/Contents/MacOS/EdgeUpdater on macOS 15.7 Apple Silicon) Or try Stop Microsoft Edge Auto Update | MacRumors Forums.

    If the previous version's packages were deleted or auto-updated by accident

    download 143 from https://msedge.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/baac52e6-2ffc-4cf9-a792-93bcb485bdc9/MicrosoftEdge-143.0.3650.139.dmg

    2 people found this answer helpful.
  3. DongLin Chen 35 Reputation points
    2026-01-25T02:07:59.4933333+00:00

    Same problem with MBA m3, 16 GB RAM, Tahoe 26.2

    2 people found this answer helpful.
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  4. Sylvester Pillay 10 Reputation points
    2026-01-23T05:59:24.95+00:00

    Following WCR comment, the usage went from over 100% to under 10%.. huge difference. I was also on build Build 144.0.3719.82 and rolled back to 143.0.3650.139

    2 people found this answer helpful.
    0 comments
  5. Onboard3462 15 Reputation points
    2026-01-30T19:40:46.1+00:00

    I've solved it by switching to a different Chromium-based browser.

    Shipping software that consumes excessive CPU for over a week without a fix raises concerns about Edge's development and release process...

    I wake up to find my laptop overheating in the mornings, which may reduce battery life. This is unacceptable.

    1 person found this answer helpful.
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