If you connect to your office LAN from your home office you probably have a VPN Client.  The VPN Client logs you into the office LAN with a password.  As part of its duty to prevent office data from leaking to the Internet, the VPN Client blocks access to your home office LAN.  The once-a-day desktop icon cleanup senses the inability of these desktop icons to reach their destinations, so it deletes them.  I then laboriously put them back.     My printer is reached through a link in the Active Directory.  So I cannot print whilst connected to the office LAN.   Naturally, all of this happens without so much as a "How do you do?"