I had same problem and after 4 hours of searching solution. It helped that i put default internet settings from explorer. Go to tools and bottoms is properties and there last tab at right and bottom of that page use default settings etc.Then just reopen explorer to get settings inuse and also same to launcher.

If u get unable to download version when clicking play. You need to clear temp folder,go to users/user/appdata/local/temp.
Also you need to have showing hidden folders on to see appdata folder.