ACSM File - opening and understanding

Did your computer fail to open an ACSM file? We explain what they are used for and recommend software that we know can open or otherwise handle your .ACSM files.

What is an ACSM file?

An .ACSM file is an Adobe Content Server Message file. These files provide licensed users access to digital publications like e-books and magazines.

A common misunderstanding is that an ACSM file is an actual e-book - it is not. It contains the information needed to download an e-book or digital magazine through the Adobe Digital Editions e-book reader.

When you purchase an e-book or magazine online, it gets linked to your Adobe ID. When you open the provided ACSM file with Adobe Digital Editions, it checks with the Adobe Content Server, which is Adobe's Digital Rights Management (DRM) platform, if you have the needed license to view the document. If it checks out OK, the actual publication is downloaded to your device so you can view it.

Can ACSM files be converted to PDF?

No, they cannot. They do not contain the publication you want to view. They contain a link to Adobe's license validation service. Open the file with the Adobe Digital Editions software, and the software will validate if you have a valid license for the publication - and if you do, it will download it so you can view it.

How to open ACSM files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension ACSM for different purposes. We have identified 1 ACSM opener for Windows that is compatible with this specific type of ACSM file.

Programs that open these files

We have not yet verified any programs for Mac that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!
We have not yet verified any web services that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Suggest another file format using extension ACSM

While we know of one file format using the .ACSM file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .ACSM file.