Note: This article has done its job, and will be retiring soon. To prevent "Page not found" woes, we're removing links we know about. If you've created links to this page, please remove them, and together we'll keep the web connected.
If you see this alert, it means that SharePoint Workspace has failed to reserve a network port for the purpose of receiving inbound messages. This might be happening because another application has reserved the port and is blocking SharePoint Workspace communications. To resolve the problem, restart your computer.
