Method 1 of 2:
Windows
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Images 1 of How to Open an Acsm File on PC or Mac Install Adobe Digital Editions. If you don't already have this free app installed:- Go to https://www.adobe.com/solutions/ebook/digital-editions/download.html in a web browser.
- Click the Windows download link to download the installer.
- When the download is finished, double-click the installer (usually located in the Downloads folder).
- Follow the on-screen instructions to install the app.
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Images 2 of How to Open an Acsm File on PC or Mac Press ⊞ Win+E. This opens the File Explorer. -
Images 3 of How to Open an Acsm File on PC or Mac Navigate to the folder with the .acsm file.- If you can't find it, type its name (or just type *.acsm) into the search box at the top-right corner of the window, then press ↵ Enter. It should appear in the search results.
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Images 4 of How to Open an Acsm File on PC or Mac Right-click the .acsm file. A context menu will appear. -
Images 5 of How to Open an Acsm File on PC or Mac Select Open with…. Another menu will expand. -
Images 6 of How to Open an Acsm File on PC or Mac Click Adobe Digital Editions. An authorization screen will appear. -
Images 7 of How to Open an Acsm File on PC or Mac Enter your ebook vendor information (optional). If you don't have this information or don't want to enter it, skip to the next step. Select the vendor of the ebook from the drop-down menu, then enter your login and passcode.- This step is helpful if you want to be able to transfer DRM-protected ebooks between devices (up to 6).
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Images 8 of How to Open an Acsm File on PC or Mac Check the 'I want to authorize my computer without an ID' box. Only do this if you didn't enter your vendor information in the last step.- If prompted, click Authorize on the pop-up message to confirm this change.
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Images 9 of How to Open an Acsm File on PC or Mac Click Authorize. It's the button at the bottom-right corner of the window. This authorizes your computer, and a confirmation screen will appear. -
Images 10 of How to Open an Acsm File on PC or Mac Click OK. You can now read the .acsm file in Adobe Digital Editions.
Method 2 of 2:
macOS
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Images 11 of How to Open an Acsm File on PC or Mac Go to https://www.adobe.com/solutions/ebook/digital-editions/download.html in a web browser. This is the download site for Adobe Digital Editions, a free application that allows you to read .acsm files on your Mac. -
Images 12 of How to Open an Acsm File on PC or Mac Click Download Digital Edition Macintosh. This downloads the installer package (.dmg) to your Mac. -
Images 13 of How to Open an Acsm File on PC or Mac Double-click the installer package. It's the file you just downloaded.- By default, downloads are saved to your Downloads folder.
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Images 14 of How to Open an Acsm File on PC or Mac Double-click the installer package. It's called Digital Editions 4.5 Installer.pkg (version number may vary). -
Images 15 of How to Open an Acsm File on PC or Mac Follow the on-screen instructions to install the app. Start by clicking Continue, then go through each screen until the application is installed.- You'll have to enter the admin password toward the end of the installation.
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Images 16 of How to Open an Acsm File on PC or Mac Open Finder. It's in the Dock, which is usually at the bottom of the screen.
Images 17 of How to Open an Acsm File on PC or Mac -
Images 18 of How to Open an Acsm File on PC or Mac Open the folder that contains the .acsm file. -
Images 19 of How to Open an Acsm File on PC or Mac Hold the Control key as you click the file. A context menu will appear. -
Images 20 of How to Open an Acsm File on PC or Mac Click Open With. -
Images 21 of How to Open an Acsm File on PC or Mac Click Adobe Digital Editions. This opens the .acsm file in Adobe Digital Editions.
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