Latest express update --> Not Syncing

What specific device are you attempting to synch?

It's a 910xt. But the problem lies on the express. Was syncing before the update. I clicked on the "Sync" button and the program did something. After the update, the program is responseless.

I'm having the exact same problem with a 310XT.  The "Sync" button does nothing when clicked, and I've tried removing the device and now Express is refusing to find it when I search for it again.  Very frustrating.  A driver un/re-install hasn't fixed it.

Yes, indeed.

It is frustrating to say the least. I think the very least Garmin should do is to verify their updates do not mess things up befor releasing them...

Also, 

I am having the exact same issue and tried what you did. I called customer support and they don’t support the 310xt and only wanted to talk about upgrades. I wonder if their update intentionally doesn’t work with older models?

I did a full reinstall of Garmin Express and it seems to be working now. I've no idea why that fixes it when an update broke it.

Saw this and decided to pull the old 310XT out of my drawer and give it a go. It wasn't a simple process, but here's what worked.

• Charge 310XT to 100%
• Reset 310XT to factory defaults
• Verify that "data transfer" and "pairing" are enabled
• Uninstall Garmin Express (check the box to remove all files)
• Restart computer
• Download latest GE from Garmin's webste
• Install GE (as administrator)
• After 5 minutes, the ANT+ stick and device were recognized

Wow.

Indeed a very long and tedoius procedure which shouldn't have to be implemented if garmin people didn't screw-up express with the unnecessary update.

Such a waste of time and effort.