Working with a new Dell PowerEdge R420 server running Server 2012 R2 Standard. The hardware is hosting a Hyper-V client also running Server 2012 R2 Standard which is sharing several SCSI controller VHDX drives. Frequently clients using MS Access 2013 running mdbx databases get disconnected with errors that connection to the database were lost. No network errors are logged on the client, host server or VM. Network adapter is Broadcom Gigabit Ethernet BCM5720, with the Virtual Switch using a dedicated physical NIC port. Virtual machine queue is disabled on the host NIC and within Hyper-V. Right now no other virtual machines are running on this machine due to instability. Worked with Dell ProSupport to no avail and all drivers/firmware are updated. Any help or insight would be greatly appreciated!