Well, it is at least in part how many linux distros configure Grub, it can be set up to boot the last selected OS, which I think should be the default… I changed it on all of my dual boot systems, though I haven’t been using Windows all that much lately, so it hasn’t been all that big of a deal for me.

I just wish that Windows hadn’t changed the default update config to restart no matter which option is selected, since it makes that situation soooo much more annoying.

When this happens, Firefox has been updated in the background & the non-updated parts that’re loaded into memory attempted to load one of the updated parts & found that they were no longer compatible, causing this message to appear.

At this point you HAVE to restart Firefox in order to be able to use it, no way around it. Soooo very fun on Mac & Linux since both can update in the background. It’s also possible to have this happen on Windows, but it’s far more rare as it seems to require having multiple different instances running at once.