Renaming a local development VMs is required in order to access a VSTS project across multiple machines.
Visual Studio Team Services (VSTS) (formerly known as Visual Studio Online or VSO) is needed for version control. In development topologies, multiple VMs cannot access the same VSTS project if they have the same machine name. VSTS uses the machine name for identification. If you are developing on local VMs downloaded from Microsoft Lifecycle Services (LCS), you may encounter issues.