Build Number ― 25F5053d
Apple Silicon System Firmware Version ― 18000.120.31.0.1
T2 BridgeOS System Firmware Version ― Pending
New Features & Changes (Found something new? Please press "Edit" on the bottom of this post and add it here)
Resolved Issues
New Issues (If you are encountering any issues, please press "Edit" on the bottom of this post and add it here)
Remaining Issues
- 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
- (26.5 Beta 2 Notes: 2 of my testing alarms have successfully went off so maybe there were adjustments here or it was luck)
- When filling your screen with the App Store, the title of the View may be wider than expected
- On non notched devices, the volume indicator may have excessive padding in full screen (Present since 26.2 Beta 3)
Issues Information: 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"
Additional Notes
- Updates might not show up in Settings as soon as it releases if you have Rosetta 2 installed. This is due to Apple not releasing Rosetta at the same time as macOS Tahoe Betas. Please wait up to an hour before you will be able to update.
- If you are encountering a memory management issue (eg. a Memory Leak), please provide what app/process it is coming from (Using Activity Monitor) and what you were doing in that app.
- macOS 26 Tahoe will be installed via a Delta Update in System Settings. Please be aware about this, as 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, M5
- 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, M5, M5 Pro/M5 Max
- MacBook Neo: A18 Pro
- 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 26.5 Release Notes
- macOS Tahoe Overview
- Apple Security Updates
- Become an Apple Beta Tester
- Full Installer (Direct Download) (Pending)
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