NOTE: THIS LINK PROVIDES MORE INFORMATION FOR WINDOWS 8 http://www.ghacks.net/2015/04/17/how-to-remove-windows-10-upgrade-updates-in-windows-7-and-8/
In Windows 7:
1. CONTROL PANEL - PROGRAMS AND FEATURES - on the side, click VIEW INSTALLED UPDATES
2. In the list that appears for the list of installed WINDOWS UPDATES, scroll down and locate the following updates in WINDOWS 7
KB2952664
KB2990214
KB3021917
KB3035583
VERIFY EACH KB NUMBER BEFORE CONTINUING
3. UNINSTALL EACH UPDATE YOU FIND - NOTE: When asked to reboot select LATER and continue until all those are uninstalled and remove them in the ORDER shown above
THEN REBOOT
Go back and check to see if those updates are all gone in the system.. if they are then check and see if you can still connect to Windows Update... IF BOTH ARE TRUE SKIP TO #6 BELOW AND HIDE THE UPDATES AT WU. You are done
If KB2952664 has come back or appears again, OR you cant connect to Windows Update and get a ERROR continue with #4 below after uninstalling KB2952664 again
Here is the kicker.. if you UNINSTALL KB2952664 many systems cant connect to Windows update anymore! Really MS? Punishment or dimwit strong-arm tactics?
4. Run this MS FIX IT tool
http://windows.microsoft.com/en-us/windows-vista/windows-update-error-8000ffff [ignore the reference to Vista]
Run with the check box aggressive mode unchecked, let it finish, close and then rerun the tool again with the check in AGGRESSIVE
5. Once finished, reboot
The above repairs Windows update from not being able to run but BE AWARE it will CLEAN/FLUSH the Windows update 'history' list but wont remove the update list
6. Once rebooted run Windows Update in MANUAL MODE do not let MS download and install updates automatically.. the updates I noted above should reappear in the list including KB2952664 right click them all and select HIDE
KB2952664
KB2990214
KB3021917
KB3035583
you will no longer be prompted to install those hidden nonsense updates unless MS decides to try and slip them back in again and Windows Update will work fine
For Windows 8 the process is similar.. you can review the link above to remove this garbage
EDIT: If the above FIXIT tool fails and you still can not connect to WU, Try this tool:
https://support.microsoft.com/en-us/kb/947821/
Download the correct version x32 or x64 and let it repair WU. It will request you install a KB and then it will run a aggressive scan to fix issues.
It can take 10 minutes and up to 3 hours to run sometimes so if it appears to hang at like 85%, its still running.. reboot when it finished and recheck WU and don't worry about the MSfixit tools