Garmin Express Catalina
Mac Catalina 10.15 and Big Sur 11.0 and newer require permission to allow devices to connect with Garmin Express. You may see a message Garmin Express would like to access files on a removable volume. Clicking OK will allow Garmin Express to recognize the device. Clicking Don't Allow prevents Garmin Express from recognizing the device. Macs only: Garmin Express not detecting devices on macOS Catalina and above? As of macOS Catalina, Apple requires you to give permission to allow Garmin Express to communicate with connected devices. When opening Garmin Express for the first time, you should see a message asking for this permission–click OK and you won’t need to do this again.
MapInstall and MapManager for the Mac software version 4.3.5. As of December 16, 2020. Download (32.67 MB). View installation instructions. Notes: MapInstall installs maps onto your Garmin USB GPS devices and SD card readers. Recently, (10/10/19) I upgraded my MacBook Pro (Mid 2015) to macOS Catalina 10.15I was adapting to lots of slight differences in the operating system, but the one that caused me troubles was accessing my Garmin Nav VI in both Garmin Express and Garmin BaseCamp.When apps/devices that could be cons.
It appears that Garmin Express can not update itself. This issue is showing up with V22.214.171.124 and macOS 10.15.3
Garmin Express Catalina Update
A ticket has been opened at Garmin, they are working on this.
However, given the symptoms of this issue, Mac users will most likely have to go to Garmin and get a new copy of GE until GE can update itself again.
So I went and opened GE to check if anything new was available for my devices and if a new version of GE was available. I noticed right away that GE was not indicating that GE was up to date, and I had to manually initiate an update check. That query resulted in a failure message. This all started around Friday, so I let it go as Garmin doing some sort of system/server maintenance. The issue is still here on Monday. I called Garmin and they confirmed the problem on one of their Macs. We checked to make sure that my Mac was set up correctly, and it is.
GE was updated Jan 21, 2020 to V126.96.36.199, and macOS just a couple days later. This problem showed up after the macOS update.
I'll post here when the issue is resolved, or any updates.