Case 1. When there’s a software distributed by Apple running in a PC.
Auto Scan of IDIS Solution Suite uses mDNSResponder service distributed by Apple.
Software made by Apple also uses mDNSResponder. So, sometimes the Apple software conflict with Auto Scan of IDIS Solution Suite and IDIS Solution Suite cannot scan cameras.
Please delete Apple software if it is installed in a PC where IDIS Solution Suite is installed for better device scanning. Or, keep a PC or PCs to be utilized only for IDIS Solution Suite.