Why do programs installed on macOS Sequoia require reinstallation after every reboot/shutdown?

No apps once installed need reinstalled.

That's how it was until this morning.

Now, I can't install anything without being prompted to reinstall it following a reboot or shutdown.

Which apps specifically?

Everything!

If I install any app, the installation will go through fine with no errors or issues. I can even run it afterward with no issues.

But after I reboot, and try to run any newly installed app (by clicking on the app icon) it will (instead of opening the app) take me through the install process again.

I basically can’t install any new app on the machine (regardless of what it is) without being prompted to reinstall it after a reboot or shutdown. 

I tried installing about 5 apps today (including Brave Browser and Maxthon). 

After I install them and reboot the machine, I am asked to go through the install cycle again. 

Many of these programs have previously been installed and were working without any issues.

I just opted to remove them a few weeks ago (as I wasn’t using them as much).

I haven’t had any installations issue with anything before this (not even last night) when I installed Microsoft Teams.    

Drag them to the Applications folder manually and open them from there.

Holy cow!

This fixed the problem. Now all my new installs are working fine.

Niel wrote:

Drag them to the Applications folder manually and open them from there.

(259142)

PS: You are right. It does seem like it’s trying to run the app from the DMG file. 

I can’t even find a newly installed app in the “Applications” folder.