I am a long term user of ANT Agent. I know the tricks how to make both GE and ANT Agent work on the same PC.
But today after an appr. one-year hiatus I tried not just to download .fit fand .tcx iles from my 910XTs, but to upload the .fit ones to GC. ANT Agent did not accept my username & password combination. Not even those of my wife which I tried to use it as a test.
I even installed ANT Agent on another PC where it worked in the very same way, that is downloading were OK, but not uploading.
I even created a new GC account as a test, just to be sure that username could not be different from the email address I used when registering. NB: I know that the real name in GC or the display name in GC are different from username, but just in case I wanted to test it, too.
I spotted many years ago that ANT Agent not just did not get sw updates, but after a while there were always error messages when I clicked on "Check for Software Updates" as a test saying it "encountered an error ...." etc.
My brief question: has been ANT Agent completely shut down by Garmin, there is no more possible to use it to upload files???
FYKI my tests were both on W11 and W10.
EDIT: I took my 15 year old laptop from a closet and test it, too. That laptop runs on Windows 7. I got the same error of incorrect username and password combo.