I recently bought the upgrade Lightroom 6 from Lightroom 5. I had problems with the activation every time I started the program, it said it couldn't connect to the internet. I followed all the recommendations on the website except the offline activation to no avail. When I started the program today it started up without wanting me to activate it. How do I know if it is activated or not?
I am having exactly the same problem
I think I finally resolved the problem. I removed the line "127.0.01 activate.adobe.com" from the hosts file which is located in "C: windows/system32/drivers/etc/hosts". You will have to open hosts with notepad. After I did that it the activation screen hasn't popped up. I used the serial number from Lightroom 5 to activate it. I hope that works for you.