Updated can't log in the only user is "other User"

[bradyacord]

My windows 10 just updated and now when I turn my PC on the only user option is "other user" which I can not log in with Ctrl Alt Del will not work I have a Microsoft account but have no way to sign in with it please help

 

[Colif]

ON the screen that shows before login screen, click the power button
while holding shift key down, click on restart button
this loads a blue menu

See if we can get to safe mode:
choose troubleshoot
choose advanced
choose start up options
hit the restart button
choose a safe mode (it doesn't matter which) by using number associated with it.
Pc will restart and load safe mode

this will ask for logins so if it can't see other user, it may not work

Was the update exceptionally long and restart a few times? that would be a version update, you could try a reset and roll back to previous version of win 10
get into the blue menus again
choose troubleshoot
choose reset this PC
If this was a version update, there should be an option "Rollback to previous version of windows"

if that option isn't here, don't reset unless you comfortable losing all your data. We can try to save anything that was on hdd before you ran update though

from blue menu again
choose troubelshoot
choose advanced
choose command prompt

I typed notepad in which obviously opened the notepad. From there I went to file > open which opened a file explorer

plug in another USB and copy stuff off you cannot afford to lose.
then i would do a full reset as the other choice (keep files/settings) will remember login info which doesn't help you.