Not a good start to October Patch Tuesday. In addition to all the Windows 10 problems, Microsoft pulled October 9, 2018 Win7 Monthly Rollup, KB 4462923.
Woody Leonhard is at MS-DEFCON 1: Current Microsoft patches are causing havoc. Don't patch.
I’m moving us to MS-DEFCON 4: There are isolated problems with current patches, but they are well-known and documented here. Check this site to see if you’re affected and if things look OK, go ahead and patch.
UPDATE: It looks like we aren’t out of the swamp with the Win7 Monthly Rollup installing correctly. See @pkcano’s post if you hit an error.