I have Visual Studio Enterprise 2015 with Update 3. Recently, NuGet package manager stopped finding any package except the set of offline packages: Microsoft Visual Studio Offline Packages
.
I tried opening different projects, restarting visual studio and went to the extent of repairing/upgrading Visual Studio.
I also tried all the methods in this question: VS2015 nuget package manager not finding packages.
Nothing worked.
When I try searching/upgrading packages from Visual Studio NuGet UI, the Loading or Searching progress ring appears, but nothing is loaded. Task Manager and Firewall suggests that no connection is made.
Finally, this appears:
[nuget.org] Unable to load the service index for source http://api.nuget.org/v3/index.json.
An error occurred while sending the request. Unable to connect to the remote server A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
I might be missing something obvious. What am I doing wrong? Any help is appreciated.