"XXX can’t be opened because Apple cannot check it for malicious software." How can I still open app with this message?? No instruction for Mac Big Sur

I have this problem too since the last security update.

I am using a MacBook Pro (13-inch, 2012) running Catalina. I follow the instructions in the link above (Safely open apps on your Mac - Apple Support) but the problem remains. I have this problem with all applications that I installed from identified developers after the last security update. I enter in a loop: (1) run the app, (2) I have the message "XXX can’t be opened because Apple cannot check it for malicious software", (3) I go the preferences panel -> Security & Privacy -> General and click "open anyway" and I have again the message in (2).

I already tried all the solutions I found online. I am very furious with this. Can anyone help me?

Safely open apps on your Mac - Apple Support

The above link points to an article discussing this and related security messages.

ellie_apple wrote:

"XXX can’t be opened because Apple cannot check it for malicious software." How can I still open app with this message?? No instruction for Mac Big Sur

I have this problem too and I do this

1. Open System Preferences
2. Click Security & Privacy
3. Click the lock
4. Enter your Administrators Username and Password
5. Click Open Anyway or Allow

There is obviously nothing in the last security update to cause such a problem. You must have installed some incompatible system modification or made some change to your system configuration. What those changes are, I can't guess.

I have always (and recently) open the Applications folder,

right click on the app to bring up the contextual menu,

then control +click Open. I get the dialog and open any way.

Of course this was an app from a source I trusted, it just wasn't motorized

as many small developer apps have not yet done.