I had an issue with an older PC and Windows 7 updates. I had previously tried to update to Windows 10 last year by the standard download and upgrade route, unfortunately, it refused to activate. I had to format and start again in Microsoft Windows 7 Pro.
I decided to try again this week as the deadline is next week so I tried the updater, unfortunately, it got stuck and did not download any updates. I followed various methods, tried windows update trouble shooter, downloaded various Microsoft patches but nothing worked.
I found a solution that worked for me, I found this thread at superuser which had a link to WSUS Offline Updater software. After downloading the current version 10.07 (dated 15/07/16), I selected the x64 version and allowed the software to download and patch my pc.
After completed the operation which took maybe 10 mins, I expected to be asked to restart but I wasn’t. I manually rebooted anyway and there was no configuring updates splash screen as there sometimes is so I wasn’t sure if the update worked. I clicked on Windows 10 icon on the task bar but it said error, cannot restart. I went to windows updater instead and the only option was to upgrade now, restart. It restarted and I am glad to say that the process completed and I now have an activated Windows 10.