How can I turn Windows Defender off?

Windows Defender keeps turning itself back on and deleting files that I need without conformation. Every time I try to go disable the service completely, the options are greyed out like this like shown in the picture. I am also denied permissions through command prompt, as shown in the second picture. Is there a way I can make it so the the options are no longer greyed out and make the service not start on startup?

I also tried making an exclusion in Windows Defender to make it so it doesn't scan the C:/ drive, it worked at one point but now after a complete OS reset, it wont let me add an exclusion because I need elevated permissions. I don't really know why they call it "your pc" if you can't change half the settings they throw in there. I'd appreciate it if anyone could tell me how to make it so I have absolute control of my system, thank you!

Borg 386 said:

This tutorial may help:




Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums

Oh my gosh! Thank you so much. The registry edit file fixed it. I have been at this for weeks trying to disable it. I cannot thank you enough! :)