who is your internet provider?
I had problems with the mine craft launcher before so i decided to uninstall it , Now when i tried to install it it comes up with:
"Couldn't load launcher core from C:\Program Files(x86)\Minecraft Launcher\game\launcher.dll: LoadErrorNotPresent" and then "Unable to start Minecraft Runtime Environment. This is most likely caused by corruption. Please try to reinstall Minecraft."
My firewall is not on and i have no antivirus on my pc, i have tried uninstalling many times
I solved my issue a long time ago and i forgot to update.Basically my internet provider at home is SKY network and when downloading minecraft launcher it would block some files .
I solved this issue by using my mobile hotspot to play on minecraft