I've been dealing with this problem for nearly a year. I use Adobe Applications on 2 computers, one at home one at the office. Both Windows 10 PCs I built.
One of PCs (Hostname: LD-HOME) does not release activation when rebooted. Every time after reboot I start Photoshp (or any other Adobe App) I get error "You've Reached Your Device Activation Limit"
You can see in the screenshot below that it shows 3 devices, 2 of which are the same "LD-HOME" (This Device is LD-HOME). I spoke to 3 different support agents and all they can tell me is to deactivate computer via https://account.adobe.com/activated-devices This obviously works... until next reboot.
I've already checked "Credential Manager" service and it's running.
Jeffrey, you are a hero! Whatever you did on backend seem to fix the problem. I was asked once to sign in again, but no more activation limit screen! Rebooted PC, and it works after reboot, doesn't even ask for sign in anymore. Thank yoiu so much you made my day! 🙂