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Try reinstalling Adobe PDF again.
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the problem is that all of the content type under applications is missing. &nbsp;I tried to rename the mimeTypes.rdf file in the Profiles folder and restarted Firefox but no luck.
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the problem is that all of the content type under applications is missing.  I tried to rename the mimeTypes.rdf file in the Profiles folder and restarted Firefox but no luck.

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mdjosyf --<br />
&quot;&nbsp;there is no Content Type or Action for those types&quot;<br />
What types?
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mdjosyf --
" there is no Content Type or Action for those types"
What types?

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I did an update in Firefox from 28.0 to 30.0 but now in the Options / Applications tab there is no Content Type or Action for those types. &nbsp;Uninstalled Firefox and reinstalled but the same problem happens. &nbsp;I'm trying to get Adobe Reader to open a PDF file without first having to Save it to disk. &nbsp;That's controlled in the Applications tab but mysteriously there is no Content. &nbsp;Any ideas?
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I did an update in Firefox from 28.0 to 30.0 but now in the Options / Applications tab there is no Content Type or Action for those types.  Uninstalled Firefox and reinstalled but the same problem happens.  I'm trying to get Adobe Reader to open a PDF file without first having to Save it to disk.  That's controlled in the Applications tab but mysteriously there is no Content.  Any ideas?

firefox

Web browsers are applications used primarily to display documents, files and media from the Internet, identified by a Uniform Resource Identifier (URI) that can be a page, image, video or other file. Some browsers require the use of add-ons or extensions to safely render the information they receive; others have systems built into them to perform the same functions.