We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Pesquisar no apoio

Evite burlas no apoio. Nunca iremos solicitar que telefone ou envie uma mensagem de texto para um número de telefone ou que partilhe informações pessoais. Por favor, reporte atividades suspeitas utilizando a opção "Reportar abuso".

Saber mais

Why can I no longer download and read .pdf files

  • 2 respostas
  • 10 têm este problema
  • 1 visualização
  • Última resposta por Diane MacLean

more options

I have never had any problems downloading and reading .pdf files until I 'upgraded' the Adobe reader to version 11. Now all attempted downloads fail because "I don't have the necessary helper application or even C:\DOCUME~1\Will-o\LOCALS~1\Temp\Back Channel II - The Vietnam Betrayal - Chaps 1&2.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences. What in the world is going on and how do I fix it?

Under 'Tools - Applications - Adobe Acrobat Document, the I've selected 'Use Adobe Reader.' However since I also have Adobe Acrobat 8.3, I've tried substituting that for the Reader, but that doesn't work either. Please help.

I have never had any problems downloading and reading .pdf files until I 'upgraded' the Adobe reader to version 11. Now all attempted downloads fail because "I don't have the necessary helper application or even C:\DOCUME~1\Will-o\LOCALS~1\Temp\Back Channel II - The Vietnam Betrayal - Chaps 1&2.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences. What in the world is going on and how do I fix it? Under 'Tools - Applications - Adobe Acrobat Document, the I've selected 'Use Adobe Reader.' However since I also have Adobe Acrobat 8.3, I've tried substituting that for the Reader, but that doesn't work either. Please help.

Solução escolhida

You might try the following:

(1) Change your preference to "Preview in Firefox" and use the download button to save the file. But that is an extra step.

(2) Change your preference to "Always ask" and see whether you can get the file to open that way.

(3) Clear your application preferences file (it sometimes becomes corrupted) and start again. Note: these are only the preferences for which applications handle which types of content, not all of your Firefox preferences.

To do that:

(i) Open your current Firefox settings (AKA Firefox profile) folder using

Help > Troubleshooting Information > "Show Folder" button

(ii) Switch back to Firefox and Exit. Your Windows Explorer window should return to the foreground. Pause while Firefox finishes its cleanup.

(iii) Rename mimeTypes.rdf to something like mimeTypes.old

(iv) Restart Firefox. It's likely you will be defaulted to "Preview in Firefox" and hopefully the paths for Adobe Reader and Adobe Acrobat will now be correct if you choose one of those.

Any luck?

Ler esta resposta no contexto 👍 7

Todas as respostas (2)

more options

Solução escolhida

You might try the following:

(1) Change your preference to "Preview in Firefox" and use the download button to save the file. But that is an extra step.

(2) Change your preference to "Always ask" and see whether you can get the file to open that way.

(3) Clear your application preferences file (it sometimes becomes corrupted) and start again. Note: these are only the preferences for which applications handle which types of content, not all of your Firefox preferences.

To do that:

(i) Open your current Firefox settings (AKA Firefox profile) folder using

Help > Troubleshooting Information > "Show Folder" button

(ii) Switch back to Firefox and Exit. Your Windows Explorer window should return to the foreground. Pause while Firefox finishes its cleanup.

(iii) Rename mimeTypes.rdf to something like mimeTypes.old

(iv) Restart Firefox. It's likely you will be defaulted to "Preview in Firefox" and hopefully the paths for Adobe Reader and Adobe Acrobat will now be correct if you choose one of those.

Any luck?

Modificado por jscher2000 - Support Volunteer a

more options

Brilliant! Problem solved! Thanks so much.