I was having the same issue, first time I resolved it I restarted my computer. 2nd time it started happening I opened the Minecraft launcher as an administrator and it started working again, these two solutions I believe have nothing in common so a proper fix is probably not easy to do or possible client side.
Gerold
I was having the same issue, first time I resolved it I restarted my computer. 2nd time it started happening I opened the Minecraft launcher as an administrator and it started working again, these two solutions I believe have nothing in common so a proper fix is probably not easy to do or possible client side.