Downloading MP3 files or Epub books using the Overdrive libraries' website API no longer works since the Firefox 115.120esr update. For audiobooks, it appears to work normally at first, downloading an ODM file which can be opened to display a list of all the part files waiting to be downloaded. Taking the [Open] option within the Overdrive Media Console, the process fails, with this message: "A connection to the Internet could not be established. Please check your Internet connection; you must be connected to the Internet to proceed with this download." For Epub books, it appears to work normally at first, downloading an acsm file, but then, when the open option on the file is selected the Adobe Digital Editions app, presents this message: "Connection Error Detected—Digital Editions could not connect to the fulfillment server. Please make sure you are connected to the internet." So it seems that not too much was broken. Have I provided enough information for you to know what's broken & how to fix it? John S.: jsinet6@gmail.com