Proper Last Windows Update notifications

If you use the channel limits to set up a limitation on the Days Ago channel, it should only go into an error status when that value is above what you define. Make sure that you only define the upper limit and it should work correctly. If this is still alerting, make sure to check the alert to see what is causing it, it may be something else that's causing the alert.

With regard to devices that are disconnected from the network, there is really no way to avoid them being in an alarm state other than to use a schedule to pause them or pause them manually. You could also have the sensor pause itself or auto-acknowledge using a notification and executing an HTTP action that uses the API like what is described in the article here

Actually, my mistake. It doesn't error for both (red), it's green for both. So if the threshold is exceeded it notifies green and states the threshold was reached. Then if it clears or drops below it sends a green notice that threshold is not reached. We are on version 13.3.4.2557 and the notification is setup as follows:

Threshold Trigger - When Primary channel is Above 30 for at least 5 seconds perform Email to Admin - When condition clears perform Email to Admin

We are only using triggers for this object and not inheriting any. This is the only one. Thanks.

Setting the threshold trigger like this will not make the sensor go into an error status. If you want to define when the sensor should be in an error status, please set up channel limits for the channel and then the sensor will go into an error status when that limit is hit.