(back it up if you want)
download the installer
temporarily disable your antivirus program
open it
it wont uninstall minecraft, but it will say "repair" and "uninstall". click "repair" and do "next".
then it will check for missing required files and it wont delete anything!!!!
spoiler gives info about server and computer!
1.Why does minecraft forge server not load mods?
2.can i use batch files and properly run forge server?
3.forge doesnt load
All thanks,
Jackmio