Windows 10: Windows 10 Defender Won't Start Error 0x0800706d9

Windows Defender will not start on my computer and has not for months. The main problem is that it's stuck on "Starting..." in Services so I can't really do much. As I understand, many other Windows 10 apps are reliant upon it, so much of the rest of my computer isn't working either Store, Pictures, etc. Any help would be appreciated, I have done a great many things trying to fix it but it's just not starting. Thank you.

:)

 

Lumia 830 main camera won`t start

After windows 10 update my lumia 830 camera won`t start . It says Camera won`t start . I tried other camera apps but camera still not work . Front camera working plz help me . I did hard reset , soft reset , downgraded to 8.1 but problem still persist

 

Skype won´t wok in 17063

Ok...

After update my Windows 10 to 17063.1000 build, skype won´t work...

It open, but if I Start my conversasion with camera, file share or screen share, it crash...

If I try to uninstall anda install again, I give an error...

Any workaround to solve this issue??

*Mad*Mad*Mad*Mad

 

Windows 10 won´t start any program as Administrator

Hello. I´m having this issue since installed one of the latest Windows 10 system updates.

When I try to open any program that requires Administrator confirmation (that screen with the Yes/No question), this dialog won´t appear anymore. The screen background stays darkened and nothing happens.

1. Using Windows 10 Home (x64)
2. My microsoft user account is properly checked
3. I´m the administrator of the PC
4. Already tried do create another administrator user account - same problem, no success
5. Cannot start any program/service that requires administrator authorization (not even regedit)

Please help!