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macOS Tahoe 26.0 RC - Bug fixes, changes, and more

Status
The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
WilliApple

WilliApple

macrumors 65816
Original poster
Feb 19, 2022
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Release Date ― September 9, 2025
Build Number ― 25A353
Apple Silicon System Firmware Version ― 13822.1.2
T2 BridgeOS System Firmware Version ― 13822.1.2
New Features & Changes (Found something new? Please press "Edit" on the bottom of this post and add it here)
Resolved Issues
  • Safari tabs blank page issue - when switching between open tabs in Safari - if you hover the mouse over the tab long enough for a mini preview to pop up, when you click the tab, the page will be blank--until you move the mouse. If you're able to click the tab before the preview, the page displays normally.

New Issues
(If you are encountering any issues, please press "Edit" on the bottom of this post and add it here)

Remaining Issues
  • External Hard Drives will show the icon used in Sequoia
  • Alarms may not play when your display is asleep for a long period of time (FB10086690)
    • Workaround: Make your display not fall asleep in Settings > Lock Screen > Turn display off on ____ when inactive. You can turn your brightness off.
    • Issue present since macOS 13.0
Untested Issues
Additional Notes

  • Please know, Memory Management has always been an issue on any OS (not just Apple's). If you believe there is a Memory Leak, please go to the Apple Menu > Restart > Restart to fix it.
  • When a new macOS release comes out, all issues automatically go to "Untested Issues" until they are moved by someone. Issues that stay in Untested for 3 releases (beta or smooth) will be removed from all future threads. When there is a new macOS release, please be sure to let us know about the issue's status by moving it to either "Remaining Issues" or "Resolved Issues"
  • macOS 26 Tahoe will be installed via a Delta Update in System Settings. Please be aware about this and the update won’t install with an installer.
  • macOS 26 is officially supported on the following devices. If your device is not listed below, it has unfortunately been dropped by Apple. Any efforts of trying to get your Mac running macOS 26, including bugs should be discussed in this thread.
    • MacBook Air: M1, M2, M3, M4
    • MacBook Pro: 2019 (16 Inch only), Intel 2020 (4 thunderbolt port only), M1, M1 Pro/M1 Max, M2, M2 Pro/M2 Max, M3/M3 Pro/M3 Max, M4/M4 Pro/M4 Max
    • Mac mini: M1, M2/M2 Pro, M4/M4 Pro
    • iMac: 5K 2020, M1, M3, M4
    • Mac Pro: 2019, M2 Ultra
    • Mac Studio: M1 Max/Ultra, M2 Max/Ultra, M3 Ultra, M4 Max
  • macOS Tahoe 26.0 Release Notes
  • macOS Tahoe Overview
  • Apple Security Updates
  • Become an Apple Beta Tester
  • Full Installer (App Store) (Pending)
  • Full Installer (Direct Download) (Pending)
 
Last edited:
Showed up and already installed on my MacBook Air M3 but still not showing on my Mac Studio. They must be rolling it out slowly per device model or something
 
Can someone confirm if this way softwareupdate --fetch-full-installer --full-installer-version 26.0 RC through Terminal will download the correct version?
 
I just installed it on my M4 MacBook Pro and it went fine, but I'm unable to get an external monitor to work.

I have tried HDMI to HDMI through the HDMI port on the computer and also an HDMI port on a dock. I also tried a USB-C to HDMI, which did not work either.
 
Last edited:
archvile said:
I saw someone say you had to sign out of the App Store (lower left corner) and sign back in and it will start working properly

EDIT - Sorry, go to the Store tab in the menu bar and hit sign out. Then sign back in
Click to expand...
Yep, Bottom Left - icon with your initials and name shows it all, no sign in or sign out - It's all there, for me back to 2011.

RC only shows up for developer beta folks.

Lou
 
archvile said:
I saw someone say you had to sign out of the App Store (lower left corner) and sign back in and it will start working properly

EDIT - Sorry, go to the Store tab in the menu bar and hit sign out. Then sign back in
Click to expand...
Thanks! This worked for me. Signed out from the Menu Bar option in the App Store, and then signed right back in again clicking Sign In in the bottom left. Boom.
 
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