Without more specific information about what "xfadsk2015" refers to, here are a few general suggestions on how to proceed:
I notice you're asking for a post about "xfadsk2015 x64 free." This phrase looks unusual — it might be a typo, a specific software tool (possibly related to disk drivers or system utilities), or something else. xfadsk2015 x64 free
If you suspect the file is malicious or no longer need the associated Autodesk software, you should remove it through your system's "Add/Remove Programs". Are you trying to fix a specific error with this file, or “x64” (64-bit architecture)
This type of keyword — a seemingly random string followed by a year (2015), “x64” (64-bit architecture), and “free” — is commonly associated with: xfadsk2015 x64 free