Deleting the local license storage often forces the software to re-authenticate properly. all Autodesk applications.

At its core, the error code is a linguistic artifact of machine logic. The prefix “registration-activation” indicates a two-step process that has failed. The user has likely provided credentials (registration) but failed the second, crucial handshake (activation). The numeric suffix “-0015.22-” is the machine’s precise signature, likely pointing to a specific failure node: perhaps a timeout in an authentication server (code 0015) on a particular software version (22). To the developer, this is a diagnostic arrow. To the user, it is an incomprehensible hieroglyph.

This error often stems from discrepancies between your local installation and the recorded subscription data. Key triggers include: