We've been using Lansweeper for around 3 years now. When we first implemented Lansweeper, we just used Active Scanning for our Active Directory domain. It worked great - computers would turn on around 8am and Lansweeper would scan them about 15 minutes after they turned on.
Fast forward to now, we still have Active Scanning setup the same way we did 3 years ago...however computers are not getting scanned at appropriate times. In fact when I look at many machines, the last scan attempt is usually like 2am or so (which of course failed since the computer is off). When the computer then turns on in the morning, Lansweeper doesn't even attempt to scan it during the day but instead tries again at night.
Any ideas why active scanning stopped working in the past few months?