When I install any .deb package it gives me "the file is not supported"

[Giovanni Stabile]

Description: Ubuntu Zesty Zapus (development branch)
Release: 17.04
Gnome edition

When I double click .deb package gnome-software starts but it gives: The file is not supported.
When I run in terminal it also gives me an error.
I can install the package if I run sudo apt install ./Downloads/nameofpackage.deb

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: gnome-software 3.22.5+really-3.22.5-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-8.10-generic 4.10.0-rc8
Uname: Linux 4.10.0-8-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
CurrentDesktop: GNOME
Date: Fri Feb 24 15:09:43 2017
InstallationDate: Installed on 2017-02-23 (1 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Alpha amd64 (20170219)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-software
UpgradeStatus: No upgrade log present (probably fresh install)

[Jeremy Bícha (jbicha)]

Which .deb files did you try?

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Anton Sudak (anton-sudak)]

Confirm that install local package feature doesn't work, showing "The file is not supported.".
Log conains following lines:
18:29:45:0269 Couldn't register with accessibility bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
18:29:45:0302 Gs Enabling update monitor
18:29:45:0386 Gs network status change: online
18:29:45:0386 Gs pushing back entry for unknown
18:29:45:0386 As run 0x562d08d1d0f0~GsPlugin::packagekit-local(gs_plugin_file_to_app)
18:29:45:0386 As run 0x562d08d1d0f0~GsPlugin::fwupd(gs_plugin_file_to_app)
18:29:45:0440 Gs using main window
18:29:45:0445 Gs failed to convert to GsApp: no application was created for /home/asudak/Downloads/deb/google-chrome-stable_current_amd64.deb