i had the same issue as you man, i had to update my computer which i hadn't done since 2/24/2014, windows updater was searching for updates for hours on end and still nothing happened. i ended up searching around the windows forums and came up with some things that worked for me
this is my post on windows forums
http://answers.microsoft.com/en-us/...6b-5cc838679a5c?rtAction=1470357443219&auth=1
it has links to updates i manually downloaded and installed which helped me out, i got those links from the second post on this topic
http://answers.microsoft.com/en-us/...-updates/be46fe4e-926c-4e21-819c-a8424e0ec697
download all the updates and install them one at a time then download the windows client update march 2016 and update that. eventually you're pc should start finding updates it self if this doent work you can try the other methods posted in these two topics. i also downloaded this and installed it
Microsoft Visual C++ 2015 Redistributable (x64) - 14.0.23026 i tried finding the url where i downloaded it from but i couldn't maybe you can if you search google. if you know your os bit system 32 or 64 you'll need to download the proper one x86 for 32 bit x64 for 64bit
hope this works, cheers