Windows 10: Tamper protection in 1903?

Just upgraded to Windows 10 1903 and have a question regarding the Windows Defender Tamper protection.

If I need to turn off Real Time protection, will I need to turn off Tamper protection first?

:)

 

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.

 

Defender Tamper Protection/1903


For me, Tamper protection consistently turns off when installing Windows Defender updates (KB2267602). Immediately after updating if you check tamper protection it is off, when it was on before.

I thought perhaps the update required a reboot (even if it didn't warn me of this) to re-enable Tamper protection, so I rebooted to test it out, but it was still off after reboot

This happens whether I use offline updates downloaded from Microsoft, or automatic updates from Windows Updates.

Win10 1903 x64

 

Defender Tamper Protection/1903

It might be a one-time issue with 1903 but I'm not sure. Ever since my friend turned Tamper Protection back on last Thursday, it has not turned itself off again. And so far, mine is staying on since re-enabling it a day ago.