Unable to install Boot Camp 6 Update for Windows 10 due an invalid signature I previously upgraded to Windows 10 on my MacBook Pro (Mid 2012)'s Windows (former W7) Partition. Sadly I'm unable to install the BootCamp 6 update - it fails during the installation. Following error message pops up: 



If I do so, following message shows up: 



I couldn't find any Boot Camp 6 installer online... Neither a possibility to update Boot Camp on my OSX El Capitan Partition? 

Any solution to fix this problem?
Found that enabling developer mode under "Update &amp; Security" in the system settings allowed the Boot Camp 6 update to install with no issue.