Corrupted PDF Downloads from Intranet sites after 125.0.1 Update
Prior to update 125.0.1 corporate intranet users could download PDF files from our Line of Business applications / Webpages. Today after the latest update the PDF files download but are corrupted. The site was added to the trusted webpage without improvement.
Adobe Acrobat Reader could not open ********.pdf because it is either not a supported file or because the file has been damaged
Solution choisie
Hey Jeff! It looks like a new security feature was released with Firefox 125 that blocks downloads from non-HTTPS urls. The devs found out it causes the wrong file or a corrupted file to be downloaded on certain sites that implement downloads in a different way. They posted a note in the "Unresolved" section of the latest release notes: https://www.mozilla.org/en-US/firefox/125.0.1/releasenotes
Note from Release Notes: The recently-shipped functionality more proactively blocking downloads from untrusted sources is not working as intended and causing impaired ability to download files in legitimate situations. We are working to address this ASAP via disabling the feature remotely for existing installs and will also revert the change for the upcoming Firefox 125.0.2 release.
To verify if this the same issue you're seeing, you can go to about:config & search for dom.block_download_insecure & double-click to change it to False. Then close Firefox, reopen it & try downloading those PDF files again.
Please report back if that fixes this problem.
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That could be about a new security feature that blocks unsafe downloads, but can interfere with downloading files. You can set dom.block_download_insecure => false in about:config to disable this feature.
Solution choisie
Hey Jeff! It looks like a new security feature was released with Firefox 125 that blocks downloads from non-HTTPS urls. The devs found out it causes the wrong file or a corrupted file to be downloaded on certain sites that implement downloads in a different way. They posted a note in the "Unresolved" section of the latest release notes: https://www.mozilla.org/en-US/firefox/125.0.1/releasenotes
Note from Release Notes: The recently-shipped functionality more proactively blocking downloads from untrusted sources is not working as intended and causing impaired ability to download files in legitimate situations. We are working to address this ASAP via disabling the feature remotely for existing installs and will also revert the change for the upcoming Firefox 125.0.2 release.
To verify if this the same issue you're seeing, you can go to about:config & search for dom.block_download_insecure & double-click to change it to False. Then close Firefox, reopen it & try downloading those PDF files again.
Please report back if that fixes this problem.
about:config > dom.block_download_insecure - false Does resolve the issue with the corrupted Downloads
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