I bought Adobe Photoshop Lightroom 6 this year (Amazon, physical copy) and got my serial number etc. My problem is - I cannot register, I just get the following error "Please establish an internet connection to check your serial number" (I use the German version) although I am connected to the Internet.
Any help would be highly appreciated.
PS: Windows 7, AdobePhotoshop Lightroom6
Please reset the Internet Explore setting back to default and then try it.
Let us know if that helps.