Windows 10: Update Preventing Windows Going into Sleep Mode

Windows 10 Pro
Version 1909
OS Build 18363.1411

Hi All
For the past couple of weeks, my PC has stopped going into Sleep Mode by itself. It works if I manually put it to sleep, but not if I rely on my Power Plan and am away from the PC for a while. I've changed nothing in the plan or settings that could make this happen.
I've back tracked on anything new that I have installed or done recently - there wasn't much.
What I have found is that the issue occurs when a particular Windows Update - namely KB4601380 - has been installed.
When I uninstalled this update, everything returned to normal and Sleep Mode worked as it should. Then Windows redid the same update automatically and the problem returned. I again uninstalled this update and paused Updates for a week. No more Sleep issues again. Of course, once Updates were unpaused, along came KB4601380, bringing with it the original problem.

So my questions are . .
1) Is this an important update and do I really need it?
2) If not important, how do I prevent Windows Update from continually downloading and installing the update. I've used Microsoft's wushowhide utility to no avail. but may be doing something wrong?
3) If it is important, what can I try to cure the issue it's giving me?
Appreciate the help and many thanks

:)

 

Windows 10 Preventing Sleep Mode


Is the update KB3010668 for the new Windows 10, and was it automatically pushed down by Microsoft to repair issues of preventing the computer of going into sleep mode?

 

Windows 10 Preventing Sleep Mode

If you don't have sleep option available, check BIOS/UEFI settings. Disable S4-S5 mode and drop back to S3. Reboot and sleep should be available.

 

Preventing sleep on laptop/monitor

Hi Tricia,

In order to help you with your concern about preventing your Windows 10 not to go to sleep mode, may we request you to answer the following questions first:

• Have you made any recent changes to your computer system prior to getting this issue?
  
• What is the current Build and Version of your Windows 10 PC? To know these information follow these steps:
  

• Press the Windows key + R.
• Type Winver.
• Press Enter.
• A small box will appear showing the current Build and
  Version of your PC.

(Should you need to update your PC, you may click on this
link. This will also show you the update history for Windows 10.)

• Are you getting any error messages? If yes, kindly post it here.
• What troubleshooting steps have you taken so far?

You may utilize the troubleshooting suggestions from the post of
Aleksandr 10 in this thread, to remedy the
automatic sleep that your device is displaying. This link has been helpful to a lot of Community members who had the same concern and may also be helpful in the issue at hand.

We look forward to your response.

Regards.