User level: Level 7 (28,946 points)After seeing several threads about Rosetta 2 needing to be installed to resolve issues with macOS 27 Golden Gate I’m wondering what happens during the installation. If Rosetta 2 was installed and active with macOS 26 Tahoe was it removed when Golden Gate was installed and needs to be installed again.
Anyone know for sure?
Posted on Sep 22, 2026 6:26 AM
User level: Level 10 (131,878 points)Sep 22, 2026 6:39 AM in response to lkrupp
When I upgraded from macOS 26.7 to macOS 27.0, my installation of Rosetta 2 was unaffected¹, and Intel (not Universal2) applications launched just as they did in Tahoe. I did not need to reinstall Rosetta2.
The other observance is that on macOS 27.0, I am not receiving the Intel application sunsetting dialog that would appear on macOS 26.7 when launching the same Intel application.
With the exception of some games, Rosetta 2 will disappear with macOS 28 in Fall 2027.
¹ Some have reported that macOS 27.0 has "removed" their Rosetta 2 and upon launching an Intel application, it may request re-installation of Rosetta 2 for that resolution.
User level: Level 9 (72,871 points)Sep 22, 2026 7:29 AM in response to lkrupp
lkrupp wrote:
Anyone know for sure?
For sure, no. @VikingOSX did not need to install Rosetta after upgrading to Golden Gate. I occasionally ran one Intel app on Tahoe, so I know Rosetta 2 was installed. When I launched that same app after upgrading to Golden Gate, I was prompted to install Rosetta 2 (still, since I had not yet installed it).
I just clicked the Install button and Rosetta 2 was installed. Install was normal (Rosetta 2 downloaded, I entered my credentials/Touch ID, then it installed quickly and smoothly). After doing so, when I launch the Intel app that I occasionally use, I do see the banner notification about support ending:
The wording is a bit different (more specific) than the equivalent notification on macOS 26 Tahoe.
I suspect (but don't know for sure) that the banner notification when launching an Intel app is the expected behavior. @VikingOSX, not sure why you're not seeing it. I do know that if you launch the same app after dismissing the notification, you don't see it again for some period of time. I don't need to access my NAS settings all that often, so I'm not sure how long it takes, but after about a month I saw the notification again for the SynologyAssistant app under Tahoe.
Here's what Apple has to say about updating your apps:
Learn how to update Intel-based apps for Apple silicon - Apple Support
I think they added the parenthetical macOS 28 reference, and I don't recall seeing the terminal method for installing Rosetta 2 in the prior version of that kbase article.
Originally posted at discussions.apple.com/thread/256362686