3ds Max 2025 named‑user license token refresh after refresh token expiry

Determine the precise conditions under which Autodesk 3ds Max 2025 falls back to the Autodesk sign‑in dialog when the OAuth refresh token used for named‑user license checkout has expired or been revoked.

The application obtains a short‑lived access token (≈1 hour) that is silently refreshed using a refresh token. No user‑exposed settings exist to modify token lifetimes or to force a re‑authentication, and the exact moment when the refresh failure triggers the sign‑in prompt is not documented.

• What is the exact interval after an expired refresh token before 3ds Max displays the sign‑in dialog?
• Does the fallback occur immediately upon receiving a 401 response from the token endpoint, or after a retry attempt?
• Can the fallback be triggered without restarting the application, for example by clearing cached tokens?