Windows 10: Tamper protection turned off and cannot be enabled

For some odd reason, Tamper Protection on Windows Defender turned itself off. It'd be nice if I could just click and re-enable it, but somehow, this is disabled with the message "This setting is managed by your administrator," except, this is home machine and I AM the ONLY administrator. What's going on here and is there a way to turn it on again?Thank you in advance!

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Should I Turn on Tamper Protection in Windows Security?

hey susan its me again so about tamper protection with you forgetting to turn on tamper protection can you tell me where the option is for tamper protection also please this time write on a sticky note turn on tamper protection and to reply back and tell
where it is located. susan this time can you reply back to me today at 3:55?

 

Defender Tamper Protection/1903

Moderators: This thread deals with Defender Tamper Protection setting and 1903. If this would be better served in a different location, please feel free to move the post.

Just wondering if anyone who installed 1903 is having any unusual issue with Defender's Tamper Protection.
Here's the blow-by-blow.....

1. Friend and I were running 1809 and installed 1903 via Update Assistant on Tuesday, May 21st. No issues and Defender Tamper Protection was on (default setting).
2. Two days later, the 23rd, friend gets alert that Tamper Protection is off. She turned it on and it seems to be holding.
3. Today, I get the alert Tamper Protection is off and I turned it on. So far, it's holding.

I have no idea why Tamper Protection would turn off. Both computers are clean -- no viruses, trojans, malware or adware. We do not mess around in the registry and there is absolutely no third-party antivirus on either machine.

For now, I'm taking a wait-and-see if Tamper Protection turns off again. I don't know if it's a 1903 bug or not. Any ideas or suggestions would be appreciated.

 

Should I Turn on Tamper Protection in Windows Security?

Prevent changes to security settings with Tamper Protection

Change the Tamper Protection setting

1. In the search box on the taskbar, type Windows Security and then select
Windows Security in the list of results.

2. In Windows Security, select Virus & threat protection and then under
Virus & threat protection settings, select Manage settings.

3. Change the Tamper Protection setting to
On or Off.

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