I just got Windows 10 upgrade. But it downloaded 11% and stopped showing download % and will MediaCreationTool delete my files

[Big Bang]

I just got Windows 10 upgrade ....but it downloaded 11% and stopped showing download %. it just says downloading windows 10 without how much % it has downloaded. Also I wanted to know if i download it form Media Creation Tool ...Will it delete my files or my files will be as they are.?Please help!

 

[HEXiT]

it wont delete anything untill you start the install proper and even then it asks you if you want to upgrade or clean install.
also choose the custom install options and turn off all the snooping and dont use a microsoft account just use a local 1.