MicroMAS-h and cix100. Both recently moved to a new suite. Updated both to the newest versions, but left all ACD programs at the same version (they opted not to pay for the annual software license). Also loaded 100+ windows updates.

Vmail is 6 ports plus 2 VA's. the first VA will stop answering calls, but the 2nd one will continue to work. Symptoms is that a call gets xfer'd into the ACD and then you just hear ringing until an agent picks up, the VA port will not pick it up.
Rebooting seems to clear it, but only for a while. I thought turning off the windows firewall fixed it, but that was short lived as well.