Put the summary of the bug you're having here

What I expected to happen was...:
When I redeemed my code for minecraft and upgraded my operating system to windows ten I was expecting to see the windows 10 edition of minecraft to work.
What actually happened was...:
It sent me to the crash report screen. Saying it wouldn't work?

Steps to Reproduce:
1. Download Optifine and a few others (maybe the cause)
2. Redeem the code for free Windows 10 Minecraft
3. After download windows 10
4. See that the code didn't work and you cant play minecraft on windows 10
5. Try redeeming code again but gets denied.
Help