Notes about the ACSM file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The ACSM file type is primarily associated with 'Adobe Digital Editions' by Adobe. If your computer is asking you where to save the .acsm file then your Adobe Digital Editions may not be installed correctly or not yet authorized. Often you can solve this issue by simply setting your computer to always use Adobe Digital Editions to open this type of file (in Windows XP, for instance, right click on the file and choose Open With, select Adobe Digital Editions and tick the box to tell Windows to remember the setting; for other operating systems please read your documentation).