Signing into BlackBerry ID in BB Link
This is odd.
I was on vacation for two weeks, away from my computer. I noticed that remote file access had stopped working. I got back yesterday and opened Link, which had signed out of my BB ID, so I tried to sign in again. It failed, giving me the message "Cannot connect to BlackBerry ID. Check your Internet connection and try again." There's nothing wrong with my Internet connection.
I checked Firewall settings, rebooted PC, and even tried turning the Firewall off. These didn't fix the problem. I tried uninstalling Link and installing the slightly newer version that had come out, and that didn't work either. Sync, backup, and restore all work fine; I just can't sign into BB ID, so remote file access doesn't work.
For what it's worth, I can sign into BB ID in Link on my work computer (although remote file access has never worked on that machine, but never mind), and in BB World, so it's not a problem with my BB ID account.