FWIW, this morning, IE11 would not even start. I kept getting an "iexplorer.exe cannot start" error and when I tried to open a command prompt to run sfc /scannow, I got the same error. But Windows PowerShell opened fine to run SFC, but it found no errors.
I went into "Turn Windows Features on and off" and unchecked Internet Explorer and rebooted, then went back into Windows Features, checked Internet Explorer again, rebooted again and now IE and cmd.exe work just fine. IE starts and I get no errors telling it has stopped when exiting IE.
So we'll see if it sticks.
Oddly, Microsoft Edge is not listed as a "Windows Feature".