Google upload/packet errors (maybe)

I have been having a strange problem sending certain kinds of data using Google's services. I can't sync using Google Drive nor can I use any captchas (I click the pictures it tells me to, but when I send my response I get an error message). Incidentally Windows Update isn't working, either (I've been getting the 80072ee2 error), which might be related. I used to not be able to attach files to Gmail or upload to Drive, either, but that fixed itself for some reason.

The problem started back in November 2015. I think it has something to do with me messing around with Windows Features, but I've double-checked those and I can't see what's wrong. Is this a packet issue, or DNS?

Recent Questions...