Acrobat 9 Pro asking for, and denying serial number

[DaveGink]

Hello,

I have been using adobe Acrobat 9 Pro for a number of years with no problems. Suddenly, every time I launch it now (after asking for my admin password) it opens a software set-up dialog box that asks me to enter my serial number. The only serial number I have, or remember using for this, is the one that came on my Adobe Creative Suite 4 Design premium package. However it is telling me that the serial number is not valid. I really need to use this application.

I hope someone can help.

I am using a quad-core Early 2008 Mac Pro, running OS X Yosemite.

Thanks!

Dave

[kglad · Accepted solution]

there was a separate serial number for your acrobat 9.

you can check your account for that number, https://www.adobe.com/account.html

if it's installed and activated on another computer, you can recover the serial number

windows: http://www.belarc.com/free_download.html

mac:  https://mac-product-key-finder.com/

or Find your serial number