The "Waiting for Region Handshake" message occurs when the Second Life Viewer does not receive an acknowledgement from the server. The usual cause of this error is a firewall blocking UDP packets. Reconfigure your firewall to resolve this problem. i use the windows firewall i dont use antiviruses cuz for one ive had alot of issues with them in the past they always add viruses or stuff thatl slow my laptop down or even fry my hardware cuz of the info it gives out even tho i told it not to if anyone can help me with this issue plz let me know cuz ive added slplugin slvoice an the sl viewer it self to the allowed programs in my firewall