I don't have a MAC no external CD and I bought Lightroom 5 some time ago, how can I download Lightroom 5 and enter my serial number, I always see 6 of Lightroom, but not version 5? You can download Acrobat from the below mentioned link:ĭownload Adobe Acrobat products. I have my serial number but the order does not come under the heading upward my story. How can I re-download Acrobat? I have my serial number but the order does not come under the heading upward my story.