Has anyone updated to macOS 26 and started seeing issues with their MacBook?

I just upgraded my 2019 MacBook Pro, and now external drives aren’t showing up, and some system apps like Mail and App Store are stuck on loading. Safari works fine though.

Mac/ Macbook

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Viewing 5 replies - 1 through 5 (of 5 total)

Iamshivam

Participant

October 25, 2025 at 10:18 am

Yeah, that’s tied to the same issue with system apps.
Tahoe seems to break the authentication with Apple servers in some cases. Logging out of your Apple ID in System Settings, then logging back in, plus reinstalling Xcode often solves the SDK download problem.

OliviaJames

Participant

October 25, 2025 at 10:17 am

Got it. And I’ve noticed Xcode won’t download the iOS 18 SDK either. Any fix for that?

Ezra Flint

Participant

October 25, 2025 at 10:15 am

Reinstalling the update over your current installation often fixes system app loading issues without wiping your data.

OliviaJames

Participant

October 25, 2025 at 10:14 am

Ah, that makes sense. But what about the system apps? They just keep spinning on the loading screen. Tried restarting and even Safe Mode, no luck.

Iamshivam

Participant

October 25, 2025 at 10:12 am

Yep, I’ve noticed the same. macOS Tahoe seems a bit finicky with older drives and some apps. For external drives, first thing I’d check is if the drive appears in Disk Utility. If it does, you might just need to reformat or repair it using First Aid. If not, it could be a driver-related issue or a kernel extension that didn’t update properly.

Viewing 5 replies - 1 through 5 (of 5 total)