This error can occur when you're trying to download titles using OverDrive for Windows (desktop).
Here is the exact error message you may be seeing:
The version of this file is not compatible with the version of Windows you're running. Check your computer's system information to see whether you need an x86 (32bit) or x64 (64bit) version of the program, and then contact the software publisher.
This issue is generally caused by a file association error. Please follow our instructions to set OverDrive for Windows to open ODM files automatically, and then try to download the title again.