I once had something similar (not a W10 update). The mouse was
cordless and the dongle was in an additional USB port rather than the
main one. It turned out the additional port was not recognised at the
start and moving it to the 'main' port instead resolved the problem.
This is the update with all the improvements and plugs the millions of
The last time MS did a major update on my machine it was unusable for
around an hour with update processes working in the background.
No, the thing Jim is seeing, has happened before.
Many releases of Windows 10 have had the problem.
I've had different mice on the Test Machine and
the serial (RS232) mouse always worked. Occasionally
one or both USB mice would disappear.
This used to be traceable, to leaving your "allow
Windows Update to mess up your drivers" tick box.
If stuff like that is unticked, there's less trouble afoot.
But I don't have a particularly magical method of restoring mouse.
Not a "surgical" method. The mouse is broken, and not everyone
has an extra mouse to plug in and try and tip things upright.
Jim would not like the other methods I have in mind. *******
Summary: Multiple mice can be plugged into the computer. Each
mouse can move the cursor for you. If you have multiple
mice, you might well get lucky and have a working mouse
You set your PC to remind you that updates are available and
you choose to install them.
My Windows Update page says "Feature update to Win 10 release 2004,
blah blah , click here to download and install"