error 0x80070643

I get a Fatal Error 0x80070643 during MP2 installation on Windows 10, "Verify that you have sufficient privileges to start system services", which I do. I have tried many things: Removed the previous version completely Removed ServerMWC Run CCleaner Free Confirmed that Windows is up to date...

I tried to install MediaPortal 2 onto my PC running Windows 7 Home Premium 64 bit. I received the error message:- I have examined the log file..... The error line states "Failed to install MSI package". Can anyone advise what action I should take to rectify this?