Windows 10: wuauserv service tasks are grayed out and access denied

Hello everyone,



I used to stop windows updates when I use limited Internet by stopping the windows update service (wuauserv) but it seems like I can't do that anymore, so if its possible I'll need to help please.


Here are attached images to give u clearer picture of my problem.

Thanks





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Task Scheduler Service Could NOT RESTART - all button GRAYED - NOT ALLOWED to Start Service

OS: Windows 10

I disabled Task Scheduler Service but later could not ENABLE this SERVICE - all button grayed - now can not run DiskDfrangment

It was disabled thru below process

pressing windows + X

then pressing computer management

then pressing Services and Applications

then pressing Services

then double clicking Task Scheduler to get properties

then was disabled

NOTE: Thousands of people facing this problem but proper step by step solution was not available in the net. So, it would be highly appreciated, if someone could provide step by step solution for ENABLING TASK SCHEDULER SERVICE, which is GRAYED, which
is not ALLOWED to ENABLE on Services and Applications, the solution could be thru Registry or thru other method!!!

 

Audio Service not starting - access denied


My audio service is refusing to start regardless of what I try on Windows 10 1803.

I have attempted the following:

• Re-installing audio drivers
• Updating audio drivers
• A full virus scan
• A disk check
• An SFC check
• Making sure all the dependencies of the Windows Audio Service are running

None of these have succeeded in changing anything.
Whenever I try to start the audio service, I get this error message:




This made me think it is potentially the firewall messing everything up, so I start up Windows Defender and get this error message:




Are these two problems related, and does anyone know how I can fix it?

EDIT:
The Windows Defender Antivirus Service and Windows Defender Antivirus Network Inspection Service are both not running, and when I try to start them I get this error:




I imagine that this is connected in some way but I have no clue how to fix it.

 

"Access is Denied" in task manager

Operating System: Windows 10, latest version.

Issue: Getting "Access is Denied" when trying to lower CPU usage for the Antimalware Service Executable/Windows Defender Service

So I am trying to lower my CPU usage for a laptop I bought, however when attempting this I get an "Access is Denied" when attempting to remove it. I do own this PC and am the only user on this PC, so therefore I should have full permission over what I want
to do to my computer. Also, I can't seem to permanantly disable the "Windows Modules Installer Worker."

Questions:

How do I gain full administrative powers over my PC?

How do I disable/remove the Windows Defender Service (will be using a different antivirus software?)

How do I permanently disable many applications I do not want back?

How do I disable startup programs that are not listed within my startup list on the task manager or windows config?

***Post moved by the moderator to the appropriate forum category.***