I've read all the suggestion, but I found my quick solution is by "changing my update server to the original main server", and then it solved my problem with "Ubuntu software center, no application data found" (I've changed my update server last time to singapore based "nus" due to suggestion by my network administrator to enhanced update speed)
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1563155 Title: No Application Data Found Status in gnome-software package in Ubuntu: Confirmed Bug description: I installed ubuntu 16.04 and when I go to the gnome software, it says "No Application Data Found". It is all greyed out and no apps are available for download. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1563155/+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