HI welcome to JustAnswer
When you got this serial number ? Also check for which version of product you have received this serial number and which version is installed .
Sometimes your Anti-virus blocks communication with your computer and our activation host.1) Simply go to you Anti-virus and deactivate it for 5 minutes or until next restart2) Close down Bridge Baron3) Open Bridge Baron and proceed with the activation4) If you still experience problems restart your computer and try again5) If the problem continue please feel free to contact at 1-***-***-**** or email at***@******.***.
That's great !!. Happy that it started working fine .. Would you like to rate me by providing your valuable ratings to me?