It is worth noting that as Autodesk continues its aggressive migration from Network Licenses to "Named User" subscriptions, Status 2100 errors are evolving.

Autodesk products store licensing data in a hidden folder called Trusted Storage. If this data becomes corrupted due to disk errors or antivirus interference, the license status 2100 can appear.

Look for users of <feature>: – any entry with (hot) indicates stuck licenses.

When you hit this error, you are not fixing a bug in your CAD drawing. You are not innovating. You are now a sysadmin. The "fix" usually involves:

Corrupted licensing information, missing updates for the Autodesk Desktop Licensing Service , or an outdated Single Sign-On Component (AdSSO) .