How to Fix it
Click the Windows Start Menu on the lower left of the screen.
Type Homegroup, then click on the Homegroup setting for Control Panel
Click Change Network Location.
Click Discoverable Yes.
Right-click the wired or wireless network icon that you are using in the System Tray, then click Open Network and Sharing Center.
Verify network shows as Private network. If it isn't, set to Private.
Restart Composer. Check announcement agent.