macOS unable to open any non-Apple application

I did experience a very strange slowdown earlier today, and other odd behavior - first, a massive slowdown and then on a reboot, the keyboard wasn't found. After some tinkering, it's all better now - though I don't know that the tinkering actually did anything.

Explanation of the keyboard behavior: https://news.ycombinator.com/item?id=24839101

Same, keyboard and trackpad stopped working momentarily.

> a massive slowdown and then on a reboot, the keyboard wasn't found.

That seems to happen on MacBook Pros when the computer boots or wakes from sleep with the WiFi turned on, but the WiFi router can't connect to the Internet for whatever reason.

Apparently Apple runs the same check on startup even to connect the internal keyboard/mouse.

That can be symptomatic of always-on VPN. My last employer had an always-on device VPN and it would cause this issue - my MBP would complain no keyboard was connected at times following a wake event, and then reconcile a few/five seconds later.

But no fix :(

There are many fixes, none of which are likely to be incredibly popular. Here’s one: https://elementary.io/

Same! On 2 Macs! My external keyboard and mouse stopped working. I thought I was having some hardware or USB issues.

Are you using Logitech keyboard and mouse, by any chance?

Yeah, switching the OS is not exactly a fix. The project is coming along great though.