QGIS cannot be opened after updating to Mac OS Catalina (QGIS is not notarized)

@oole97 I have just upgraded and I can open both 3.8 and 3.4 without a problem.

• After update you re-installed the QGIS?
• You should have been asked if QGIS is still trusted, have you clicked OK or Don't Allow?
• Can you remove QGIS and reinstall it?
• If nothing helps, can you try commands from https://github.com/qgis/QGIS-Mac-Packager#debugging-tips and attach output?

workaround: you need to right click on open, and then open again this does force open on mac

I indeed needed to reinstall. I was using a previous version beforehand. I could not indicate that I trust QGIS. It was automatically blocked.

The workaround indeed works. Thanks for the help!

@oole97 so after reinstall it was without the wrong certificate error?

hmm, I got this:

https://www.fireebok.com/resource/how-to-fix-that-app-can-not-open-on-macos-catalina.html

we need to notarize our app: https://developer.apple.com/documentation/security/notarizing_your_app_before_distribution

This is indeed the sign I got. But with the right click I can open it again.

Maybe it is also possible to work around it by authorizing it in the Security tab in Settings. I have not tried it yet.

You can also allow the app in security preferences

This problem still exists on qgis 3.12, version downloaded 22-Apr-2020, on OSX Catalina 10.15.4.
Error is verification as in PeterPetrik commented on 9 Oct 2019 post.
Note last version that worked for me was 13.8.

Just change it in Security and Privacy -> Allow apps downloaded from -> Apps store and identified developers. It will show QGis has not opened, with an option to open on the side. Click it. It will open

Hi

That was the default setting,but id would not open.

However if you press Shift and Click then select open that fixed it, even over a cold reboot.

On 28 May 2020, at 07:54, Harikrishnan Guruvayoorappan notifications@github.com wrote:

Just change it in Security and Privacy -> Allow apps downloaded from -> Apps store and identified developers. It will show QGis has not opened, with an option to open on the side. Click it. It will open

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Hmm. Interesting. I had download the version today and installed it. Tried the way I said, and it opened fine. Good that it works for you now!

Hi
I found the shift method on a search for another piece of software that would not install, so tried it on qgis.
Seem rather inconsistent ways of doing things.
Perhaps qgis can either get it accepted by Apple, or place a work around on their website, I could not find
any solution when I searched a few weeks ago.
macosx Ver 10.15.5 has just been release, hopefully it will still work.

On 28 May 2020, at 08:04, Harikrishnan Guruvayoorappan notifications@github.com wrote:

Hmm. Interesting. I had download the version today and installed it. Tried the way I said, and it opened fine. Good that it works for you now!

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Same issue on MacOS Catalina 10.15.6 using QGIS 3.10. Could open with the force open workaround.

add note to web: https://github.com/qgis/QGIS-Website/pull/809