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After latest update, Firefox won't let Adobe Digital Editions open/read .ascm files directly as intended
Maybe this is a bug report?
Adobe Digital Editions software is used by Archive.org, Open Library, Kobo store, and many other entities to deliver DRM-ed material in the form of .ascm files all named the same "URLLink.acsm" In the past, the download dialog box asked if you wanted to open the file in Adobe Digital Editions or save it to a location.
After the latest update today March 11, Firefox does not allow you to open the files in Digital Editions. It goes directly to "Save to" download location. This is not how the .acsm files are supposed to be handles. They all have the same name and are supposed to be opened into Adobe Digital Editions directly.
In Firefox Settings there is a box for - "Applications
Choose how Firefox handles the files you download from the web or the applications you use while browsing."
However, .acsm files do not appear and typing ".acsm" or the filetype name "Adobe Content Server Message" yields nothing inside this box so I cannot get Firefox to open these files with Adobe Digital Editions.
This is beyond annoying. These files are meant to be opened straight by Adobe Digital Editions. I tested it on Chrome and Chrome lets you open them fine.
Either the "Applications Choose how Firefox handles the files you download from the web or the applications you use while browsing." box functionality needs to be fixed to recognize .acsm filetypes or the previous default functionality of allowing me to choose "Open with Adobe Digital Editions" or "Save to" for this filetype needs to be restored.
If there is some other way to get this functionality back in the most current Firefox version, please advise.
All Replies (2)
Oh, and I looked at previous .acsm file issues in this forum, and the responses did not help
To be clear, on my computer, Adobe Digital Editions is already set as my default app to open .acsm files. Yesterday, Adobe Digital Editions was able open files downloaded through Firefox directly. Today, that functionality is gone. The only thing that updated on my computer is Firefox, so I am pretty positive the Firefox update did something to cause this issue.
Please advise how Firefox can handle .acsm files properly. Please add .acsm files to the "Applications" box in Firefox settings if possible or just restore the functionality Firefox has had (and other browsers continue to have) to open .acsm files properly on download
Thanks for any help or suggestions!
Modified by ZenmasterJ
I have the same problem. Looking at https://developer.mozilla.org/en-US/docs/Learn/Server-side/Configuring_server_MIME_types , it seems that now Firefox looks at the MIME-Type, not at the extension (maybe for security reasons?) and .acsm files are sent as a standard ASCII file (they are XML text, so they needn't anything particular).
I found https://addons.mozilla.org/en-US/firefox/addon/content-type-fixer/ which seems to work: the .acsm file is downloaded and then automatically opened. Hope this helps!