Retire Acrobat 8 Pro. on old computer; How do I install on new?

Acrobat 8 is extremely old. It was not compatible with Windows 7, and it's certainly not compatible with Windows 10, so problems are to be expected...

The Acrobat 8 activation server was retired by Adobe a while ago. This means you can no longer use your existing installer or serial number.

The good news is that Adobe offers a new, non-activation installer and new non-activation serial number for you to reinstall the software.

You will need your old 24 digit serial number to obtain a new, non-activation one. After that, you can discard your old serial number.

Go to Download Acrobat 8 and Acrobat 9,​ sign in with your Adobe ID and follow the instructions to obtain your new CS3 installer and serial number.

..and you can expect some (or a lot) of problems if you have an incompatible (ie, newer) os.

[moved from Downloading, Installing, Setting Up to Installing, Updating, & Subscribing to Acrobat]

CS3 and Acrobat 8 activation server is retired see reply #1 https://forums.adobe.com/thread/2372929

-you MUST use the special serial number AND the special installer you download, not your originals

-above includes a link to get the special version AND links to help with activation problems

-more information on activation problems with the new version https://forums.adobe.com/thread/2385900