In Windows, this is most likely in theC:\Users[username]\Documents\My Digital Editions\folder.
What Is an ACSM File?
A file with the .ACSM file extension is an Adobe Content Server Message file.
Adobe Digital Editions use it to activate and download Adobe DRM-protected content.
The ACSM file is nothing but information that communicates with Adobe’s servers.
Instead, ACSM files contain data from the Adobe Content Server that ensures the book has been legally purchased.
There’s more information on that process below.
Still Can’t Open Your File?
Some file formats use a file extension spelled similarly to ACSM but are different and require different programs.
FAQ
You cannot directly open an ACSM file on aKindle e-reader equipment.
Download Adobe Digital Editions and add the ACSM file to it.
