Varieties of ACSM Files

Chief ACSM Description

.ACSM

Formatting:	.acsm
Class:	Adobe Content Server Message File

ACSM files are message files served by the Adobe Content Server to Adobe Digital Editions. Digital Editions is the e-book manager and reader developed by Adobe. ACSM files may contain data to activate and download an eBook but it does not contain the eBook itself. It is basically used as a key or a ticket so you can legally download or purchase eBooks.

Organization:	Adobe Systems Incorporated
Class:	eBook Files
Key:	HKEY_CLASSES_ROOT\.acsm

Software Programs That Open The Adobe Content Server Message File:

Adobe Creative Cloud by Adobe Systems Incorporated

Windows

Mac

Linux

Web

Adobe Digital Editions by Adobe Systems Incorporated

Windows

	Mac
	iOS

Android

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ACSM File Complications

Troubles Opening ACSM Files

Adobe Creative Cloud Disappeared

Double-clicking your ACSM file prompts the message "%%os%% Can't Open ACSM File". Usually, this is because you do not have Adobe Creative Cloud for %%os%% installed. Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.

Tip: When you have another program installed that you know will open your ACSM, you can select it from the other programs listed (see "Show Apps").

Adobe Creative Cloud is Out-of-Date

It is possible that your version of Adobe Creative Cloud isn't able to open your Adobe Content Server Message File file due to incompatibility. You will need to download a newer version of Adobe Creative Cloud if you don't have the right version. This problem is most common when you have an older version of the software application, and your file was created by a newer version that it cannot recognize.

Tip: Sometimes you can get a clue about the version of ACSM file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).

Summary: Not having the right Adobe Creative Cloud version on your computer can cause problems opening ACSM files.

More Causes of Problems Opening ACSMs

Assuming you have the right Adobe Creative Cloud version installed, other problems can prevent you from opening ACSM files. If you're still experiencing problems opening ACSM files, there could be other computer problems. These other problems include (listed in order from most to least common):

• ACSM file references in the Windows Registry are broken
• Deletion of the ACSM file description from the Registry by mistake
• Partial installation of Adobe Creative Cloud that did not fully complete
• Your ACSM can't be loaded properly (file corruption)
• Your ACSM has adversely impacted by malware
• Hardware associated with ACSM has outdated drivers
• Windows has inadequate resources to open your Adobe Content Server Message File file