An IIS site page is returning a 404.13 error. This could be in the vedclient site even when trying to report back discovered certs and keys. This can be found in the response or if you are using the agent it will be returned as an error in the events.sq3 file for the agent.
This can be caused by have the requestLimits.maxAllowedContentLength set in the web.config for the site or a parent.
You can either remove the entry from the config and all parent levels. Or you can specify that it should be 2000000000.