Feature Name:AF_CAT_AFPLUS_TWrong host license (-4?

The error code "AF_CAT_AFPLUS_TWrong host license (-4)" is a specific licensing failure within the Autodesk software ecosystem, most directly associated with the Autodesk Feature Controller service and its Autodesk Flexible Licensing (AFL) or Autodesk ID-based subscription systems. This error indicates a fundamental mismatch between the software's attempt to validate a user's entitlement and the license server or host it is communicating with. The core mechanism involves the software client querying a designated license server—which could be a local network server for a standalone license or Autodesk's cloud servers for a subscription—and receiving a response that the host information in the license file or the server's own validation logic does not match the expected parameters. The "-4" suffix typically denotes a specific sub-error within this category, often pointing to an invalid hostname or MAC address in the license file relative to the machine making the request, or a server-side rejection of the client's host credentials.

In practical deployment, this error most commonly surfaces in two distinct scenarios. For users on a network (standalone) license, it frequently occurs when the license file, which is bound to specific hardware identifiers like the MAC address of the server or a designated host, has been moved to a different server or the server's network configuration has changed without a corresponding reissuance of the license. The license host ID no longer matches, causing the server to reject all client requests with this host license error. For individual users on a named-user subscription, the error can manifest when there is a corruption in the local licensing data cache, a persistent failure in communicating with Autodesk's entitlement servers that leads to a corrupted local lease, or when software is pointed to an incorrect license server type. In all cases, the software client receives an authoritative "wrong host" message from the service it contacted, halting the launch process.

Resolution is contingent on accurately diagnosing the licensing model in use. For network licenses, administrators must verify that the license server software is running on the machine specified in the license file and that its host ID matches. This often requires regenerating the license file from the Autodesk Account portal with the correct, current server host ID after ensuring the server's system name and physical address are stable. For named-user subscriptions, the standard corrective procedure involves a multi-step reset of the local licensing framework: using the Autodesk Access application to sign out and sign back in, utilizing the "Update License" option within the software's licensing dialog, or, more comprehensively, employing the Autodesk Licensing Service uninstall/reinstall tool to wipe the local cache and force a fresh handshake with Autodesk's cloud services. The error is a definitive protocol-level rejection, so solutions must rectify the identity mismatch at its source, whether that is aligning local server hardware data with the license file or clearing corrupted local data to re-establish a valid cloud-based lease.