This looks like an old bug: https://bugzilla.gnome.org/show_bug.cgi?id=630280
Can be worked around by dragging and dropping from nautilus (worked for me). Also an old ubuntu post: http://ubuntuforums.org/showthread.php?t=1576689 This happened for the first time in Xenial for me, was working fine in Wily. Have updated bugzilla. ** Bug watch added: GNOME Bug Tracker #630280 https://bugzilla.gnome.org/show_bug.cgi?id=630280 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1576247 Title: network manager does not find *.p12 files in Xenial Status in network-manager package in Ubuntu: Confirmed Bug description: I opened the network manager using Edit Connections from the pull down menu of the system tray network icon . Creating a new wifi connection, I chose WPA&WPA Enterprise in the wifi-security tab. Security: WPA & WPA2 Enterprise Authentication: TLS Identify: xxx User certificate: none CA certificate: xxx (I could chose from file manager) When opening the browser for the private key and navigating to the right directory, it does not show any *perm, *.p12 or *.der files although they are present in this directory Looks like this is a UI bug. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1576247/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp