Win 10 Home 64 bit 10586 errors I could use help with.

Hi there, I have a few errors since I updated earlier, one is where anytime I say right click and try to go to personalize, it complains about how it can't be opened with the built in admin account and to login with a diff one, however, I disabled that account as far as I know so this shouldn't be poping up. also if I hit close on the error, the settings window I requested still pop's up. So this one is more of an annoyence issue.

Next issue is well my search just does not work period, even if I put in common things like regedit and cmd, nothing shows. I did use a program that stops all the tracking junk, but I had this same thing before 10586 and I never had any problems at all like this, other than stuff like weather QQing about uac being off.

Another issue I have is windows defender constantly complaining about my av and defender being off. I may try reverting what I did to see if it helps any. It didn't so these issues are all caused by the 11586 update.

No, I usually manually scan everything, the always on scan just slows everything down so I usually disable it. Been like this for years, been virus free, I check regluarlly with manual fulls ystem scans.