Autocad 2015 Portable [work] -

Any "Autocad 2015 Portable" you encounter online is one of two things:

In the software world, a "portable" application runs entirely from a removable drive (USB, external HDD) without modifying the Windows Registry or writing system files to the host computer's AppData or Program Files folders. Autocad 2015 Portable

Despite being "portable," the software still requires specific hardware to function effectively: Any "Autocad 2015 Portable" you encounter online is

If you absolutely must test a downloaded file (in a sandboxed virtual machine with no network access), here is how to verify it: AutoCAD 2015 is:

For portable repackers, AutoCAD 2015 is: