App notarized but Gatekeeper still shows app as untrusted

Seems like every app I've tried is doing this in the latest beta. Adobe Reader DC for example, the DMG is failing security checks and the .pkg installer. I needed to Right-Click override both to install.

You should still get that pop-up, even with a notarized app. That is the first-level of Gatekeeper. It may be that Apple just removed the text saying "Apple checked the app for malware and none was found". That text is now superfluous since Notarization is required and could have legal implications that Apple wants to avoid.

Apple says that: "Apps that haven’t been notarized show a yellow warning icon" (https://support.apple.com/en-us/HT202491).

I am seeing the same thing: DMGs I have notarized and stapled correctly (according to xcrun altool) display the yellow warning icon when opened. However, the alerts still present an "Open" button, just like the "passed a security check" alert. That alert states that Apple has "checked the software for malicious software and none was detected".

Apple should fix this. I'd prefer my users saw that message rather than the vague warning.

Thanks for posting that support link. It clearly shows the difference. That first "downloaded app" dialog (with no yellow icon) is gone. Apple has taken the unnotarized dialog in Mojave and is using it as the "downloaded app" dialog in Catalina.

I hope this is not permanent. I thought that was the whole point of notarization: to let users know they are opening software that has been checked by Apple. What's the point of going through all the notarization folderol and not getting Apple to vouch for it.

Apple changed the rules. If you don’t notarize, it doesn’t install at all.

I believe that is incorrect. I am able to install, open and run web browser-downloaded non-codesigned/non-notarized apps in Catalina with the right-click trick.

Could you post screenshots? My situation is that on Catalina, whether I double click, control+click and choose "open", or right click and choose "open", I get the same dialog box, which just says "the following disk images couldn't be opened".

To give you an idea, I get this even for example even when trying to access files from Apple: Download for Sketch

-Verxion

Actually just found a solution for my issue with not being able to open ANY dmg on Catalina:

sudo spctl --master-disable