Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

My default PDF program is Nitro but when I download a PDF file it fails

  • 2 replies
  • 2 have this problem
  • 2 views
  • Last reply by jmrinoz

more options

When I download a PDF file it comes up with the following message........ C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\FXP8560MFPD-1.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences.

Where/how do I find the preferences to change the association

When I download a PDF file it comes up with the following message........ C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\FXP8560MFPD-1.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences. Where/how do I find the preferences to change the association

All Replies (2)

more options

Chosen Solution

more options

Thank you for your help. I did find that I needed to download a plug in and once that was downloaded and the system re-booted all was fixed.