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Adorobat
Adorobat
Participating Frequently
June 23, 2016

Hi steveg79277474 ,

Could you please tell if you are getting any error message when trying to activate?

What operating system do you have like Windows/Mac?

Also please visit these links and see if it resolves the issue:

Error "You entered an invalid serial number..." Adobe Acrobat 8 Pro

CS3 Acrobat 8.0 won't install due to invalid serial number

Error: "Acrobat 8 Professional cannot be launched" | Adobe Creative Suite 3

Let us know about the results.

Thank You!

Shivam

steveg79277474
steveg79277474Author
Participant
June 23, 2016

Error "You entered an invalid serial number..." Adobe Acrobat 8 Pro

Adorobat
Adorobat
Participating Frequently
June 23, 2016

Have you performed the steps which are given in this link - Error "You entered an invalid serial number..." Adobe Acrobat 8 Pro ?

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