Computer wakes from sleep automatically every night

Can confirm that in order to do this, I have to provide some sort of credentialing that I do not have. So this is useless fix here that you have provided but thank you Nikhar for trying.

I think i found a fix that doesn't require downloading anything or complicated steps. 

It's worked for me so far.

1.  Go to: Control Panel\Hardware and Sound\Power Options\Edit Plan Settings (it may also be called Change plan settings)

     (you can alternatively just search for "Edit power plan" in the windows search bar)

2. Click "change advanced power settings"

3. Go to "Sleep->Allow wake timers" and change the setting to Disable.

If this doesn't work, then using psexec like RichStevens2 suggested might be the way to go.

The directions i found on another forum was helpful:

"1. First go here to download PsTools. Extract it to a folder on your desktop. 

2. Open Start and type cmd. Right-click the program and choose to run as administrator.
3. Navigate to the folder where you extracted the tools by typing "cd C:\Users\Username\Desktop\Pstools", replace Username with your username and Pstools with the folder where you extracted the tools.
4. When you have navigated to the correct folder, copy the following command without the quotes: "psexec.exe -i -s %windir%\system32\mmc.exe /s taskschd.msc".
5. Open the command window and right click, choose paste. Press enter.
6. Navigate to Task Scheduler Library -> Microsoft -> Windows -> UpdateOrchestrator.
7. Right click the task called Reboot and click on Disable.
8. The task should now be disabled"

Hopefully one of these two options works for ya'll

If this doesn't fix it, try the same steps, but disable "Universal Orchestrator Start" instead. That was the one that was waking up my computer.

This continues to happen with no response from Microsoft. Shame on you, Microsoft. This is wasting electricity on a wide scale and putting extra wear and tear on expensive hardware. It's bad enough that you force automatic updates without proper control over how and when to install them, but when you constantly force a PC to wake due to those updates (without actually installing updates the majority of the time), while preventing the user correcting this awful behavior, you're just adding insult to injury.

I've attempted some of the workarounds described around the web to fix this issue, but none have worked for me. There are others that I haven't tried due to how absurd they are, but no one should ever have to go to the extent described by many of the workarounds to fix behavior that should simply be common sense.

It is clear that Microsoft has no intention of addressing this since this issue continues to get comments from users without a response from Microsoft. It says a lot about a company that consistently does things like this but then refuses to address the actual issues. In fact, it makes you wonder if this behavior is actually intentional. You don't have to search for long to find the many issues that Microsoft has with their updates, so this now appears to be life as a Windows user. It is clear that users are no longer Microsoft's priority. Maybe they never were.

My apologies for the rant. I've grown very tired of this and other issues that Microsoft has no intention of acknowledging.

I edited Task Scheduler tasks under UpdateOrchestrator -- "wake" was turned back on by Windows a few days later. I tried other solutions that didn't work either. I have not tried changing the permissions on the file C:\Windows\System32\Tasks\Microsoft\Windows\Update Orchestrator\Backup Scan to Administrators ownership and READ only access (seemed a bit of overkill).

Even though I run many tasks that used "wake" to run, the only thing that has stopped UpdateOrchestrator is turning off "wake" for everything in Power setttings:

Power & sleep settings> Additional power settings > Change plan settings > Change advanced power settings > Sleep (expand) > Allow wake timers (expand) > DISABLE

You may call it "overkill", some might say that the mess Microsoft have created is "overkill".

Given that nothing else has worked for you yet, you must now either live with the problem or try my solution.