Technical Issue installing Jetpack 10.5 on some sites

Today, on each of my four WordPress blogs as well as on this one, I was invited to install Jetpack 10.5 as a plugin upgrade.

On this one this upgrade seemed to hang and spin, and when I tried to go to the site again I got interrupted with an “under maintenance” message.

About five minutes later it had finished and the site was available.

On the other four WordPress blogs on another host, I got a fatal error immediately and an email informing of a technical issue. But when I went back into the control panel each time, it had done the update and Jetpack 10.5 had been installed OK.

(Posted: Tuesday, January 11, 2022 at 10 PM ESR)