Some time ago, Ubuntu introduced a Security “feature”, that would only allow trusted .desktop apps to be run, on other apps it would pop up a message.
Nothing new so far, However, said Message used to have a button to make the app “trusted”, but that button doesn’t exist anymore:
What’s the point of this dialog?
Here is Solutions:
This dialog exists for your own safety, annoying as it is.
To remove it, right click the launcher, click properties, and then go to the permissions tab and choose execute for the users you want to allow.
This will allow you to use the launcher from now on.
To do this for a large amount of launchers in the same directory, open a terminal (in the same directory) and run:
chmod +x *.desktop
Right click the launcher and press “Properties”, in the “Permissions” tab you will find a checkbox marked Execute, make sure that it is checked and Ubuntu will stop bugging you.
This may also appear if any of the paths in your .desktop files are malformed or do not refer to existing files or directories. Check that all the path names in your .desktop file exist, and this will often fix the problem.
Note: Use and implement solution 1 because this method fully tested our system.
Thank you 🙂