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How can I change the default for reading a pdf?

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I accidentally set it to "notepad" so a bunch of code comes up instead of the pdf. How can I change the default? I'm using Firefox ESR 17.0.10. Thanks.

I accidentally set it to "notepad" so a bunch of code comes up instead of the pdf. How can I change the default? I'm using Firefox ESR 17.0.10. Thanks.

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Hello,

  1. 1. go to the file that you want to fix
  2. 2. right click it
  3. 3. open with..
  4. 4. choose default then Adobe reader