Hey 255909683160029, Thanks for this great post. As of right now, we have no information regarding the support of 64 bit. However, you can use 32 bit versions of your browser Internet Explorer. Also, Firefox will usually work fine. Here is a article better explaining how to resolve this. Some Windows browsers must work in 32-bit to run with Watch/Setup on Slingbox.com
Thank you for your question!
Sling Media Forum Moderation Team