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  1. #1
    Bronze Lounger
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    PDF Plugin Missing (Explorer 6)

    Explorer no longer automatically opens PDF files, and darned if I can find out where/how you install plugins for things like PDF files. Any help would be appreciated.

  2. #2
    Star Lounger
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    Re: PDF Plugin Missing (Explorer 6)

    Perhaps I'm misunderstanding your question, but can't you simply go to the Adobe acrobat site and download Acrobat Reader? It will install itself properly, and automatically fire up when you double click on a PDF file.

    Sorry if I've otherwise missed your point.

  3. #3
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    Re: PDF Plugin Missing (Explorer 6)

    The reader is already installed on my computer, but I assume that somehow the Explorer plugin got uninstalled. Clicking on a PDF file on, say, my hard drive opens up the reader just fine, but when Explorer opens a web page in PDF format I get nothing. So, somehow the Explorere plugin is missing, or a link is missing, or something. I suppose I could uninstall/reinstall the reader, but I thought there must be some simple way to get Explorer connected to the reader.

  4. #4
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    Re: PDF Plugin Missing (Explorer 6)

    Nice to know I'm not alone with this problem! Has anyone come up with the solution...I can only open pdf's from the internet by right-click then save to my hard-drive to open. When I try to open direct all I get is the Picture not available cross thingy.
    Cheryl =^..^=

    IS Support, Adelaide <img src=/S/granny.gif border=0 alt=granny width=20 height=20>

    <img src=/S/flags/Australia.gif border=0 alt=Australia width=30 height=18>

  5. #5
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    Re: PDF Plugin Missing (Explorer 6)

    Check your security settings for any disabled script/plug-in. I can't remember exactly which it is, I think it is the "ActiveX Controls and Plug-Ins" in
    Tools > Internet Options > Security > Internet.
    Change any set to Disabled to Prompt - you can always click No! - and see if you have any joy.

    (This is what I have set, and when attempting to open a .pdf from an un-trusted site, get the message below.)
    Attached Images Attached Images
    • File Type: gif x.gif (5.3 KB, 0 views)

  6. #6
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    Re: PDF Plugin Missing (Explorer 6)

    OK, this is something that *may* be completely fixed by simply re-installing Reader, but let's see if we can avoid that!

    First off, allow me to be complusive about Terminology. Acrobat Reader is no longer a "plugin", per se. IE6 cannot use the old Netscape "plugins", and instead we are talking about an ActiveX control (namely, the Acrobat Reader ActiveX control, "pdf.ocx").

    First, do a quick search of your Hard disk and make sure you have the correct ActiveX control -- simply search for "pdf.ocx". It should be located in a folder similar to this: ...Program FilesAcrobatReaderActiveX.

    Next, let's make sure this ActiveX control is correctly "registered". This involves using regedit -- and, Chuck, I think you know how to use that, correct? If not, just ask. Open the registry and drill down to the HKCRCLSID key. You need to locate a specific Class ID (CLSID) number: {CA8A9780-280D-11CF-A24D-444553540000}. That is the Class ID for the "Acrobat Control for ActiveX". Got it so far?

    There should be multiple sub-keys there, but for now just make sure the "InprocServer32" key's (Default) value points to the correct location of the "pdf.ocx" file that you located above. This tells us that the ActiveX control is LIKELY installed correctly. There are no guarentees... (Don't close the registry yet.)

    The next part depends on what version of Acrobat Reader you have installed. If your version of Reader is too old (3 or less), it might NOT even have the ActiveX control that I described above -- and your problem will be obvious.

    If you have version 4, somewhere under the Tools/Options (I don't remember these names) will be a checkbox for "Web Browser integration". If you want IE to open the .pdf file, this box must be checked.

    If you have version 5, this is now entitled "Display PDF in browser window". Check this box to make IE open the .pdf file.

    Now, you can verify this is setup correctly in the registry. If IE is to open the .pdf file, this keyvalue MUST be present:
    HKEY_LOCAL_MACHINESoftwareCLASSESMIMEDatabaseConte nt Typeapplication/pdf
    "CLSID"="{CA8A9780-280D-11CF-A24D-444553540000}"
    If that is missing, IE will not open the .pdf file. Search for that entry in your registry.

    If everything so far has been OK and it still doesn't work, I have one more thing you need to do: Remove the old "Netscape Navigator Plug-in for Adobe Acrobat". Sometimes having that around interferes with the newer ActiveX control. To do that, go to a folder on your disk named something like:

    C:Program FilesInternet ExplorerPlugins

    Look for an entry named "nppdf32.dll". Delete this. Close and restart IE. See if that works.

    Oh, to test Acrobat's functionality, check out this page.

  7. #7
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    Re: PDF Plugin Missing (Explorer 6)

    Thanks for all the information. Acrobat now works perfectly in IE 6

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