Hello
I just want to post this because I had this problem before, but I finally found the solution. If you still have this problem and haven't found a fix for it this might help you.
1. Make sure your firewall or anti-virus is off
2. Uninstall your anti-virus if the first doesn't help
3. Reinstall Windows if nothing else helps
For me VMware workstation was getting blocked by my Anti-virus software called "Avira".
More specifically this feature in Avira:
Hope this helps for any of you that still have this problem.