What causes VxErrorConnectorLimitExceeded (5027) errors?

VxErrorConnectorLimitExceeded (5027) errors can be caused by attempting to connect and sign in more than once with a different username.

• For Core, this occurs during an explicit vx_req_connector_create call. On the second vx_req_connector_create, the error is returned.
• For Unity and Unreal, this occurs during the sign in process and results in a failure to sign in.

This error is similar to What causes VxErrorHandleTaken (5006) errors?