The category was not added because it contains no parent categories and is not a top-level category itself.
The row was not added because an existing row has the same primary key.
The data store could not be initialized because it was locked by another process.
The data store is not allowed to be registered with COM in the current process.
Could not create a data store object in another process.
The server sent the same update to the client with two different revision IDs.
An operation did not complete because the service is not in the data store.
An operation did not complete because the registration of the service has expired.
A request to hide an update was declined because it is a mandatory update or because it was deployed with a deadline.
A table was not closed because it is not associated with the session.
A table was not closed because it is not associated with the session.
A request to remove the Windows Update service or to unregister it with Automatic Updates was declined because it is a built-in service and/or Automatic Updates cannot fall back to another service.
A request was declined because the operation is not allowed.
The schema of the current data store and the schema of a table in a backup XML document do not match.
The data store requires a session reset; release the session and retry with a new session.
A data store operation did not complete because it was requested with an impersonated identity.
A data store error not covered by another WU_E_DS_* code.
Parsing of the rule file failed.
Failed to get the requested inventory type from the server.
Failed to upload inventory result to the server.
There was an inventory error not covered by another error code.
A WMI error occurred when enumerating the instances for a particular class.
Automatic Updates was unable to service incoming requests.
The old version of the Automatic Updates client has stopped because the WSUS server has been upgraded.
The old version of the Automatic Updates client was disabled.
Automatic Updates was unable to process incoming requests because it was paused.
No unmanaged service is registered with AU.
An Automatic Updates error not covered by another WU_E_AU * code.
A request for a remote update handler could not be completed because no remote process is available.
A request for a remote update handler could not be completed because the handler is local only.
A request for an update handler could not be completed because the handler could not be recognized.
A remote update handler could not be created because one already exists.
A request for the handler to install (uninstall) an update could not be completed because the update does not support install (uninstall).
An operation did not complete because the wrong handler was specified.
A handler operation could not be completed because the update contains invalid metadata.
An operation could not be completed because the installer exceeded the time limit.
An operation being done by the update handler was cancelled.
An operation could not be completed because the handler-specific metadata is invalid.
A request to the handler to install an update could not be completed because the update requires user input.
The installer failed to install (uninstall) one or more updates.
The update handler should download self-contained content rather than delta-compressed content for the update.
The update handler did not install the update because it needs to be downloaded again.
The update handler failed to send notification of the status of the install (uninstall) operation.
The file names contained in the update metadata and in the update package are inconsistent.
The update handler failed to fall back to the self-contained content.
The update handler has exceeded the maximum number of download requests.
The update handler has received an unexpected response from CBS.
The update metadata contains an invalid CBS package identifier.
The post-reboot operation for the update is still in progress.
The result of the post-reboot operation for the update could not be determined.