corrado, this is not new to Ubuntu 17.10 or nautilus 3.24. Right-click on the .desktop and click Properties. Switch to the Permissions tab and make sure the Execute box is checked.
https://wiki.ubuntu.com/SecurityTeam/Policies#Execute- Permission_Bit_Required Since this is an intended security feature in Ubuntu, I am closing this bug report. ** Changed in: nautilus (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/1687179 Title: Desktop icon Untrusted application launcher Status in nautilus package in Ubuntu: Invalid Bug description: After Nautilus update to 1:3.24.1 desktop icons are unusable. I get a message 'Untrusted application launcher' also if in icon properties Allow executing file..' is selected. corrado@corrado-art-uni:~$ apt-cache policy nautilus nautilus: Installed: 1:3.24.1-0ubuntu1 Candidate: 1:3.24.1-0ubuntu1 Version table: *** 1:3.24.1-0ubuntu1 500 500 http://archive.ubuntu.com/ubuntu artful/main amd64 Packages 100 /var/lib/dpkg/status corrado@corrado-art-uni:~$ Same problem on Ubuntu 17.10 Unity and GNOME ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: nautilus 1:3.24.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8 Uname: Linux 4.10.0-20-generic x86_64 ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 CurrentDesktop: Unity:Unity7 Date: Sat Apr 29 11:56:55 2017 ExecutablePath: /usr/bin/nautilus-desktop GsettingsChanges: b'org.gnome.nautilus.window-state' b'sidebar-width' b'271' b'org.gnome.nautilus.window-state' b'geometry' b"'890x550+576+255'" InstallationDate: Installed on 2017-04-28 (1 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170427) SourcePackage: nautilus UpgradeStatus: No upgrade log present (probably fresh install) usr_lib_nautilus: gnome-terminal 3.20.2-1ubuntu8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1687179/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
