The file name cpba-x64fre-en-us-dv9 can be broken down to understand its purpose. "cpba" typically identifies a specific Volume Licensing release, while "x64fre" indicates a 64-bit free build (retail/production-ready rather than a debug build), and "en-us" signifies the English United States language version. This identifier refers to an early ISO image—often associated with the Windows 10 Enterprise 2015 LTSB (Build 10240)—provided to IT administrators tasked with testing or deploying the new OS in corporate environments.
If you see this in your File Explorer, it usually means you have mounted an ISO file , creating a virtual DVD drive on your computer. cpba-x64fre-en-us-dv9