Apologies if this has already been suggested somewhere in the forum, but I came across a handy way to disable the Window 10 (flag/app) waiting to upgrade you.
DISABLE
Import that into your registry and reboot. It is a policy that disables the Windows 10 upgrade, which can be easily reversed when you do want to upgrade.
ENABLE
DISABLE
Code:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\GWX]
"DisableGwx"=dword:00000001
Import that into your registry and reboot. It is a policy that disables the Windows 10 upgrade, which can be easily reversed when you do want to upgrade.
ENABLE
Code:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\GWX]
"DisableGwx"=dword:00000000