Daring Fireball
Mr. Macintosh Explains Another Way to Block the Software Update Prompts for MacOS 26 Tahoe
https://daringfireball.net/linked/2026/03/26/mr-macintosh-imazing-profile-editor-tahoe
Mr. Macintosh Explains Another Way to Block the Software Update Prompts for MacOS 26 Tahoe

Link to: https://www.youtube.com/watch?v=uRg1pW8TSYk

Daring Fireball
Mar 26 at 2:46pmDF Tootbot
Show threadMike1d ago
@daringfireball @gruber I mentioned this to Rob when he first posted but this block of Tahoe is in fact a bug: https://mastodon.world/@mikematter/115912693848180652 and I’m now seeing folks say when they update to 15.7.5 the profile stops working and you’ll see Tahoe in your Settings as an offered upgraded. That’s the expected behavior as the 90 day deferral was only ever meant to hide the update 90 days from its initial release. And we are well past 90 days from the first 26.0 release. So be warned if you update!
Mike (@[email protected])

@[email protected] This seems like an interesting bug you’ve found. Apples deferral profile is suppose to delay the OS 90 days from its initial release, not 90 days from when the profile was installed. So I would expect your device to offer macOS 26.0 since we are past the 90 days from when that OS was released. A quote from Apples documentation on this feature: “When set, software updates only appear after the specified delay, following the release of the software update.” https://developer.apple.com/documentation/devicemanagement/softwareupdatesettingsdeferralsobject

Mastodon
Show threadmatt sephton1d ago
@mikematter @daringfireball @gruber the profile held for 15.7.3 and 15.7.4 for me, but in 15.7.5 Tahoe update now shows up
Show threadJohn Gruber11h ago
@gingerbeardman @mikematter @daringfireball https://daringfireball.net/2026/03/apple_giveth_apple_taketh_away
Apple Giveth, Apple Taketh Away

Safari is no longer breaking my menu-item-icon despising heart on MacOS 26 Tahoe, but the best trick to block the Tahoe “upgrade” notice on MacOS 15 Sequoia no longer works.

Daring Fireball
Show threadmatt sephton7h ago
@gruber @mikematter @daringfireball thank you. I really dislike playing this cat and mouse game.