I use adobe Pro 8, and Adobe has taken their servers offline. Therefore, the recommended procedures is to enter your serial number and a new one is generated along with a download that does not require activation. I've followed the steps more than once but here's the problem: every time I run Abobe I get the Nag Screen that says I need to register. The instructions say go into help, then register, then select Never Register. First this doesn't work because the "activate" and "register" dropdowns are grayed out. This "special" version does not require "activation" but it seems to still want registration. I presume the code problem is on my side, but if it can't validate that you never want to register, it assumes you haven't answered the question. I can select, register now, register later, never register, it doesn't matter because it doesn't work. Even if the registration option wasn't grayed out, this doesn't work because there is nothing on Adobe's side to accept it. Its annoying to have to deal with the Nag Screen every time. I've put up with it for a year, but there's got to be a solution.
Also, please don't respond with its an old product so upgrade. I'm fine with the version I have. It's like having an older car, it runs fine except every time I want to use it I have to jump-start the car because the manufacturer has disabled the battery and wielded the hood. I'm using Windows 10 and I'm fairly certain it isn't a compatibility issue as it runs fine once I get by the nag screen.
This isn't Adobe Support. It's the Adobe Captivate User Forum.
I think you may need to take your complaint more directly to Adobe via a different channel.
Are you talking about Adobe Acrobat 8 Pro? If so, you'll need to Contact Customer Care to get the correct installer for your license. We can't help you since Adobe removed all full installers of previous versions from their website.