I am able to remote into my machine when away from it and it is always running and available, the machine has not gone to sleep, only the monitors have. My machine is not going to sleep, it is configured to remain on whenever it is plugged in, even when the lid is closed. My suspicion is S4B erroneously believes my machine is about to go to sleep when the monitors go to sleep. I do not have to reenter a username or password.
Attempts by colleagues to send me a message via Skype do not work because my status is 'offline.' When I return and unlock the screens S4B is waiting for me to push the 'Continue' button and it reconnects. Soon after my external monitors sleep S4B disconnects.
My normal configuration is two external monitors attached via DisplayPort with the lid closed and power always connected. I am a corporate user and our Mac IT team has not been able to solve this very long-standing and frustrating issue with Skype for Business (S4B).