Sorry for having to revive this old post, but I just came across this exact same problem you are describing.

It says installing Acrobat 8 Professional is “allowed” AFTER installing Adobe Reader 9! It does not discuss adding Adobe Reader 9 after having Adobe 8 Pro installed. PS I just found at Adobe’s support on this question. That is the only workaround area I think is available to me, and I’m looking for some insight on how to get both to work together on Win 7 64bit if anyone has done so. I’ve researched Adobe Acrobat 8 and Reader 8 or 9 co-existence issues at and find conflicting answers, one of which is do not install Reader when you already have a full Acrobat version on your system. If there is no Reader then there is no access. It is not a plug-in issue – I think it is a programming issue that fails to accept any pdf application other than the free Reader. When I click on each pdf icon to view/print or download, I get the message insisting on installing the latest Acrobat Reader to access them. It occurs only when I log in to certain sites that have pdf files I need.

My current problem is not universal across all websites. It took me awhile to 1) update Acrobat 8 to 8.3 (which works fine with Win 7) 2) set it as a default and 3) get pdf’s to preview properly on almost all websites and within Win 7 explorer.exe and Outlook 2010. Thanks for responding – Acrobat 8 Pro and PDF Converter both have browser and MS Office plug-ins. Update: Adobe Reader 8.Probably that one has no browser add on or plugin, so the browser does not use it. The direct download links to various localized language editions of Adobe Acrobat Reader 8 is listed below.

For offline installation and other purposes, it’s best to download the full installer instead, which can be used to setup and install Acrobat Reader 8 even when you’re not connected to Internet. This miniature installer is not useful if you want to install Adobe Reader in other computer while offline or for backup or installation file. The Adobe download manager later will be launched for configuration options and then download the actual installer setup files for Adobe Reader once you have finished select the components you want. However, the setup file that you downloaded is actually a download manager which has a small download size. You can always download latest version of Adobe Reader 8.0 from Adobe website. Acrobat Reader, formerly known as Acrobat Reader, is the free download and free application necessary to view and print Adobe PDF (Portable Document Format) files, which is widely used as a way to present information with a fixed layout similar to a paper publication. Adobe Acrobat 7 has been upgraded to Adobe Acrobat 8, and so do the its popular companion software Acrobat Reader, which has been upgraded to version 8 too.

Free download adobe acrobat 8