I'm confused - forgive me, I don't have the issue, but am holding off on upgrading given the number of bugs since the spring release or whatever...
You said that the workaround is to set assets to non-active if not seen in the last XX days...
Original Post:
In our options, we have it set to "Set assets to non-active if not seen in the last [30] days."
However we found 395 Windows assets whose last seen day was greater than 30 days ago.
Plus, Last Seen does not mean that the computer isn't online and functioning as normal. Last Seen means 'Last Successful Scan' as with active scanning, if it can't scan it, it will modify the 'Last Tried' but not the 'Last Seen' - which is confusing in and of itself.
So, reports on 'Last Seen' are incorrect and lead to false reporting. I am looking at one now created by LS and not modified by me, and I can ping assets, and have verified the machines are online - it's just that they have scanning errors. If you want to accurately report not seen, you would need to use the scanning errors table, along with scan history and 'last Tried' column, to accurately report on what actually hasn' been seen.
So to me, the workaround is invalid.