Use these solutions if you can't install Adobe Digital Editions from Adobe.com, or from the Help menu in Acrobat or Reader.
Use a different browser to download Adobe Digital Editions from Adobe.com:
How do I install Adobe Digital Editions 4.0 on Mac OS 10.6 or later? For Safari users, you can locate the download in your Downloads folder. Once this disk image is mounted, double-click Digital Editions 4.0 Installer. Once the installer launches, click Continue to proceed with the installation.
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Double-click ADE4.0Installer.dmg file from your computer, to start the installation process. Click Continue to begin the installation process. Select the destination for the drive where you want to install Adobe Digital Editions. Digital Editions only installs on the drive where Mac OS is.
Mozilla Firefox: http://www.mozilla.com/firefox/
Microsoft Internet Explorer: http://www.microsoft.com/windows/internet-explorer/default.aspx
Apple Safari: http://www.apple.com/safari/download
Uninstall previous versions of Adobe Digital Editions for Windows
You must have administrator privileges to complete these steps
Do one of the following, depending on your version of Windows:
(Windows 7) Choose Start > Control Panel > Programs > Programs And Features.
(Windows Vista) Choose Start > Control Panel > Programs > Programs And Features.
(Windows XP) Choose Start > Control Panel, and double-click Add Or Remove Programs.
Select Adobe Digital Editions, and then click the option to remove or uninstall the program.
Restart your computer and reinstall Adobe Digital Editions.
Manually install Adobe Digital Editions for Windows
Download the installer for Windows by clicking ADE_4_0_Installer.zip as shown below. Then, extract the .zip file.
Download
Note:
Installer downloads to your computer's downloads folder by default.
Double-click the ADE_4.0_Installer.exe file on your desktop to start the installation.
When a message appears asking you to trust the publisher, click Run again. You can safely download the Adobe Digital Editions installer from Adobe.
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Uninstall previous versions of Adobe Digital Editions for Mac OS
It's necessary to have administrator privileges to complete these steps.
Drag the digitaleditions1x5 folder to the Trash, and empty the Trash.
Manually install Adobe Digital Editions for Mac OS
Finish installing or uninstalling any other applications.
Uninstall any earlier versions of Adobe Digital Editions.
Download the installer package for your Mac OS X machine:
If you clicked the wrong Mac OS X platform, an error message appears. Close the message box and click the correct link to restart the installation.
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Click Open in the File Download screen to start the installation. Note: If your connection times out, click Save, instead of Open, to save the installer package to your desktop.
If necessary, unzip the .zip file. If you're using Safari as your browser, or if Firefox is set up to unzip files, the file unzips automatically.
Double-click the .pkg file to start the installer, and follow the onscreen instructions.
Note: If your connection times out, save the installer package to your desktop. (Click the link for your Mac OS X machine, and then click Save.) Double-click the file to start the installation.
There are a few ways you can try to fix issues with downloading or transferring ebooks using Adobe Digital Editions (ADE):
Update to the most recent version of ADE, then try downloading or transferring the ebook again.
If that doesn't work, try uninstalling your version of ADE and installing an older version, like ADE 3.0 or 2.0.1, which are available from Adobe's website. Then, try downloading or transferring the ebook again. Note: If you use an older version of ADE, you might not be able to take advantage of any new features and security updates available in the most up-to-date version.
You may also need to reauthorize your computer if you install an older version of ADE.
If you tried these steps but keep having issues, we unfortunately can't provide more help. Adobe provides support through community forums and online articles, but doesn't directly offer assistance for issues with ADE.
However, you can still enjoy free ebooks from your library's digital collection with the options below.
Libby app
If you have a device that meets these system requirements, you can enjoy ebooks from your library with our new app, Libby. All you need to get started is an internet connection and a library card.
Ereaders
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You can enjoy many ebooks on a Kindle ereader or Kindle reading app using OverDrive's Kindle Book format (U.S. only).
You can also enjoy ebooks from your library using OverDrive on a Kobo Forma, Aura ONE, Aura H2O Edition 2, Aura Edition 2, or Clara HD.