All the extra uninstalable crap in windows 10 isn't enough, microsoft? WTF?
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CloudContent
Create a new 32-bit DWORD value named DisableWindowsConsumerFeatures and set its value data to 1
Or use this with an administrative prompt:
reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CloudContent" /v DisableWindowsConsumerFeatures /d 1 /t REG_DWORD /f
Source: WinAreo
Update: Microsoft just updated the way the send you spam apps. Wonderful! Now the last register alone can't stop the spam. Here the other ones you need to change:
reg add “HKCU\Software\Microsoft\Windows\CurrentVersion\ContentDeliveryManager” /v “ContentDeliveryAllowed” /t REG_DWORD /d “0” /f
reg add “HKCU\Software\Microsoft\Windows\CurrentVersion\ContentDeliveryManager” /v “OemPreInstalledAppsEnabled” /t REG_DWORD /d “0” /f
reg add “HKCU\Software\Microsoft\Windows\CurrentVersion\ContentDeliveryManager” /v “PreInstalledAppsEnabled” /t REG_DWORD /d “0” /f
reg add “HKCU\Software\Microsoft\Windows\CurrentVersion\ContentDeliveryManager” /v “PreInstalledAppsEverEnabled” /t REG_DWORD /d “0” /f
reg add “HKCU\Software\Microsoft\Windows\CurrentVersion\ContentDeliveryManager” /v “SilentInstalledAppsEnabled” /t REG_DWORD /d “0” /f
reg add “HKCU\Software\Microsoft\Windows\CurrentVersion\ContentDeliveryManager” /v “SubscribedContentEnabled” /t REG_DWORD /d “0” /f
reg delete “HKCU\Software\Microsoft\Windows\CurrentVersion\ContentDeliveryManager\SuggestedApps” /f
If doing this still doesn't work, try this. Some new updates will call just "Microsoft Content" is the same "Spotlight" in the link.