Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Als je Windows 10 gebruikt, lees dan dit artikel.

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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.pdf doesn't open when forward email

Thunderbird Probleemoplossing
Matt beantwoord
SuMo Bot
SuMo Bot

I have a problem with opening .pdf files in Tb. The pdf itself opens normally in the inbox, but when I try to forward a message with an attachment, the pdf will no longer open. A message is displayed: The file C:UsersAdminAppDataLocalTempsmail-1.pdf cannot be opened because the associated helper application does not exist. Change the associations for this file type in preferences. I have the default adobe program set in the files and attachments preferences. I have no idea where to look for the helper applications mentioned in the message. Can anyone help?

I have a problem with opening .pdf files in Tb. The pdf itself opens normally in the inbox, but when I try to forward a message with an attachment, the pdf will no longer open. A message is displayed: The file C:UsersAdminAppDataLocalTempsmail-1.pdf cannot be opened because the associated helper application does not exist. Change the associations for this file type in preferences. I have the default adobe program set in the files and attachments preferences. I have no idea where to look for the helper applications mentioned in the message. Can anyone help?

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Matt
Matt
  • Top 25 Contributor

It is a known bug that will be resolved in the next moth or two as far as I understand it.

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