For some reason or other, checking for updates in Win 7 has been taking some time - on another forum - up to three weeks!
I had that error 80244019 when checking for updates in Win 7 and found that by running Step #2 Pre-Scan, it found problems with Environment Variables and Reparse Points.
Using the program to fix those fixed the Check for updates without the need to run any other of the repairs in WR.
Are you now able to get all of the updates ?
Installing just a few at a time can also prevent further errors such as a Failed for some and just installing a few at a time will give you the opportunity to vet those as you select them should any be related to Telemetry or ease of upgrade or Windows Update Agent, which should help to avoid an auto upgrade to Win 10 if you don't want it.
Clicking on each update and then on More info in the right pane will tell you what each is for.
Changing your Windows Update settings to Check for but let me choose... will afford you that option rather than allowing them to auto update en-masse.
Should you find yourself with the actual Win 10 update or the Windows icon in the system tray and you don't want Win 10 just yet or ever, then download the GWX Control Panel which has preventative steps for whichever stage you find yourself at and which are reversible should you decide to go ahead with the upgrade before the 28th July 2016 cut off point for the free upgrade.
http://ultimateoutsider.com/downloads/