Delete the mimetypes.rdf file in the profile folder.

See - https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data#w_how-do-i-find-my-profile

You should also change the pdf viewer to Adobe Reader.

• View PDF files using Firefox’s built-in viewer

I change it and then, each time FF updates, it changes the preference. The issue is that FF seams to be overwriting the set up we users create each time it updates.

can you tell me what I am deleting? I am fairly computer savvy and I know that if I delete something I cannot get back, without knowing what it is and how it interests with the topic I'm requesting help for, I might not be able to get it back and need MORE help ;-)

Thanks for taking the time to reply.

Michelle

You are not deleting anything, you are changing the defualt app for pdfs (aka disabling the one you have now). Refer to

• Use Adobe Reader to view PDF files in Firefox
• View PDF files using Firefox’s built-in viewer

In your first post you said to delete the mime file, so that was what I was hoping to better understand, implication-wise.

I did look at the how to change the pdf viewer and I've done that. The issues is that when I do that, the next time FF updates, it changes the selection and sets it to save as. I am tired of having to go reset it once a week, which is how often it seems that FF is updating or doing something to the browser.

In that case, delete the mimetypes.rdf file, it will only reset the actions in the "Applications" window

I've just done that and will let you know how it works as the issue usually bubbles up once a week or so.

thank you for your help. Michelle