There is no "activation" process. If you purchased the standalone version then you need to enter the 24-digit serial number. If you have subscribed to the creative cloud then you need to sign into the creative cloud manager application with your Adobe ID and password. The programs for the standalone version and the creative cloud version are precisely the same Lightroom program. There are no differences in the functionality. The only difference is in the licensing. If you download the wrong one then you will have difficulty making it work. Please explain what it is that is happening that you need help with.
My so got me a copy of Lightroom 4 as a Father's Day gift last year. I upgraded online to 5 this year. My Mac mini crashed and I got a new one. How do I go about installing the online standalone Lightroom 5.
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Once you have both the Original LR 4 and the LR 5 upgrade keys you will just have to download LR 5 from the link below. Install then you register using first the LR 5 key then you will be prompted to enter the previous version license key.
thanks. it worked