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Why will Adobe Acrobat XI Pro (Upgrade) not install?

I have tried to install the Upgrade from Acrobat XI Standard to Pro and every time I try this the installer presents a message that "A more functional product is already installed" and it closes the installation. I do not want to uninstall the Standard because then I will have nothing to upgrade from.

Any help would be much appreciated.


Carisa Kulacz 1049 days ago

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