Merge pull request #92 from stanford-rc/macOS28

News post for GCP Apple Silicon support & macOS 27

Author: saracook

_posts/2026-06-11-gcp-macos-permissions.md

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+---
+layout: post
+news: true
+toc: false
+
+title: "macOS 27 & Globus Connect Personal"
+excerpt: Globus Connect Personal works in macOS 27, with full Apple Silicon support coming soon.
+---
+
+This week, in their annual Worldwide Developers Conference, Apple announced
+macOS 27 Golden Gate.  They also announced future plans that will affect Globus
+Connect Personal.  If you install the macOS 27 Beta, you will see a warning
+about support ending for Intel-based apps, and that Globus Connect Personal
+will not open in a future release of macOS.
+
+This is a valid warning.  Parts of Globus Connect Personal use code that is
+written for Intel-based Macs.  Today, macOS on Apple Silicon uses Rosetta to
+run that code.  Rosetta has been deprecated in macOS 27, with full removal
+planned for macOS 28, hence the warning.
+
+Globus are aware of the issue.  Globus began the transition with Globus Connect
+Personal 3.2.5.  A future release of Globus Connect Personal will bring
+full Apple Silicon compatibility.
+
+## What is Rosetta?
+
+[Rosetta 2](https://en.wikipedia.org/wiki/Rosetta_%28software%29) is a software
+created by Apple in 2020, which allows software written for Intel Macs to run
+on Apple Silicon hardware.  Rosetta 1, created in 2006, did the same thing when
+Mac OS X on Power PC hardware transitioned to macOS on Intel hardware.
+
+Rosetta 1 support ended in 2011, when Mac OS X 10.7 Lion was released.  Rosetta
+2 support will end when macOS 28 is released.
+
+## Globus supports Apple Silicon already?
+
+In the [Globus Connect Personal release
+notes](https://docs.globus.org/globus-connect-personal/changes/), there is a
+note about native Apple Silicon support.  This update introduced support for
+Apple Silicon, but that is not the complete story.
+
+Although Globus Connect Personal looks like one app, it is made up of several
+components:
+
+* The program which handles initial registration of your Globus Connect
+  Personal Endpoint;
+
+* The program which displays the Globus Connect Personal menu icon,
+  preferences, etc.;
+
+* GridFTP, the software that handles data transfer; and
+
+* The relaytool, which makes an SSH-based connection from your computer back to
+  Globus HQ, so that directory listings, transfer instructions, etc. can be
+  received for processing by GridFTP.
+
+At this time, only GridFTP has Apple Silicon code.
+
+## When will full Apple Silicon support be available?
+
+Globus Support has confirmed that a full Apple Silicon version will be released
+soon.
+
+When a full Apple Silicon version is released, the [Globus Connect Personal
+release notes](https://docs.globus.org/globus-connect-personal/changes/) will
+be updated.  Once a release is available, the next time Globus Connect Personal
+is started, it should prompt you to upgrade.
+
+In Globus Connect Personal today, GridFTP is a [universal
+binary](https://en.wikipedia.org/wiki/Universal_binary), containing code for
+both Intel and Apple Silicon processors.  Even if you are running macOS on
+an Intel machine, you should still plan on upgrading to the latest Globus
+Connect Personal version when it is released.
+
+## What do you need to do now?
+
+If you plan on installing the macOS 27 Golden Gate Beta, be prepared to see the
+warning about Globus Connect Personal.  You should also watch the [macOS at
+Stanford](https://uit.stanford.edu/service/helpdesk/macos) page, where
+University IT will report any issues that are found when testing [Essential
+Stanford Software](http://ess.stanford.edu/) for compatibility with macOS 27
+Golden Gate.
+
+If you are running macOS 14 Sonoma, macOS 15 Sequoia, or macOS 26 Tahoe, you
+don't need to do anything special: The latest version of Globus Connect
+Personal is 3.2.8, which you should already be running.  If you are running an
+older version, restart Globus Connect Personal and it should prompt to upgrade.
+If you do not get a prompt to upgrade, you can find the latest version of
+Globus Connect Personal at
+[https://app.globus.org/collections/gcp](https://app.globus.org/collections/gcp).
+
+If you are running an older version of macOS, you should also continue
+upgrading Globus Connect Personal when prompted, but be prepared for a future
+where the latest Globus Connect Personal stops working.  [macOS 13 became
+non-compliant on February 12](https://uit.stanford.edu/guide/sunset-schedule),
+so you should already be planning on a macOS upgrade.
+
+If you are running macOS on Intel hardware, macOS 27 will be the last version
+of macOS which supports your hardware.  You should start planning a hardware
+upgrade.