Pdf files were displaying in the browser, but then I accidently right clicked it and set it to not display pdf's in the browser. How can I set it so it does display it again?

I tried going into adobe reader preferences and internet, but the option is grayed out and checked, yet it still doesn't work in IE9...

I also tried reinstalling (repairing) adobe reader version 10.1.4


  • is there a reason your using ie? Thats the browser we're all trying to nuke.
    – Exploit
    Sep 25, 2012 at 6:56

3 Answers 3


First (as said on adobe's help) make sure you are using IE9 32-bit version. And check if addon is enabled in IE9. There are a lot of solutions on that help page, I think there is one that suits your situation.

I've had Reader 8, just removed and installed new version and it works now.


In Adobe Reader:

  1. Click on Edit
  2. Click on Preferences
  3. Click on Internet (about half way down on the left).
  4. You should either have:

In Internet Explorer 9: (according to the link above)

  1. Open Internet Explorer, and choose Tools > Manage Add-ons.
  2. Under Add-on Types, select Toolbars And Extensions.
  3. In the Show menu, select All Add-ons.
    Select All Add-ons

  4. In the list of add-ons, select Adobe PDF Reader.
    Note: If you do not see the Adobe PDF Reader add-on, try the other options on the menu. For example, on some systems, the add-on appears when you select Run Without Permission.

  5. Click the Enable or Disable button (it toggles depending on the status of the selected add-on):
    Enable sets the Adobe PDF Reader add-on to open PDFs in the browser.
    Disable turns off the add-on so it does not open PDFs in the browser.
    Click the Enable/Disable button


Had this happen to me after I installed Adobe Acrobat Pro The browser does not know what PDF viewer to use ( Acrobat or Reader)

Open Adobe and go to:

Edit --> Preferences --> General --> Select Default PDF Handler --> A pop-up will appear. Select one from the dropdown.

Solved it for me.

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