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Unable to open .pdf in Firefox 3.6.8 with Adobe Reader 9.3.3 installed. Error message is "The Acrobat/Reader that is running can not be used to view PDF files in a web browser."

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  • 190 have this problem
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  • Last reply by cor-el

rwfairchild
rwfairchild
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I am unable to open a PDF file in Firefox 3.6.8. Adobe Acrobat Reader 9.3.3 is installed. I get the error message "The Adobe Acrobat/Reader that is running can not be used to view PDF files in a web browser."

I am unable to open a PDF file in Firefox 3.6.8. Adobe Acrobat Reader 9.3.3 is installed. I get the error message "The Adobe Acrobat/Reader that is running can not be used to view PDF files in a web browser."

All Replies (2)

Helper7677
Helper7677
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Try these suggestions: http://kb2.adobe.com/cps/405/kb405461.html

cor-el
cor-el
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  • Top 10 Contributor
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You can get that error if there is still an old Adobe Reader plugin in the plugins folder in the Firefox program folder. 

C:\Program Files\Mozilla Firefox\plugins\nppdf32.dll

See also http://kb.mozillazine.org/Adobe_Reader

Modified by cor-el