#To get rid of the Windows 10 Upgrade notification, follow these steps:

#Open a Powershell window and run this command:
get-hotfix -id KB3035583, KB2952664, KB2976978, KB3021917, KB3044374, KB2990214

#(That should be on one line as a single command.)
#For the ones you do have installed, run this command to uninstall it, substituting the correct numeric string for each one:
wusa /uninstall /kb:3035583