D4.3 - BlueBRIDGE VREs Operation Activity: Interim Report describes the activities performed to provide the BlueBRIDGE community with the set of Virtual Research Environments (VREs) and Virtual Laboratories (VLabs) hosted by the BlueBRIDGE portal from September 2015 to November 2016. A total of 38 VREs \ VLabs have been deployed and operated, overall serving more than 1500 users across 22 countries. This requested to deal with approximately 600 tickets (32 tickets for VRE creation\update, 244 requests for support, 315 requests for incidents and bugs).