I tried it today with the exact same results. I'll post back if I find the cause

Level two MS advised me to revert back to 8.1. Said they don't have much time or much history with fixing activation issues. I went to backup in settings, clicked the revert button and had dinner....

What is this, a CCleaner cleaner option?

I updated my Surface Pro 2 from Windows 8.1 to Windows to 10 Friday and have Activation Error code is: 0xC004C003. I did not do a clean install but an upgrade using windows update which is...