I have a collection with all of my workstations which has a daily maintenance window of 10PM to 7AM. I plan to deploy an ADR to this collection, but first want to ensure the maintenance window is working. I created a test collection and created an ADR for silverlight updates. I set this to have a deadline of 2 days, and make content available asap. Deadline behavior is to allow install & reboot. In software center, I see that the update is scheduled to install after the 2 day deadline, and not on either of the nightly maintenance windows before then.
Not finding much help on Google. I found where one guy had "Agent Extensions manage the deployment of applications and software updates" set to true which caused his problem. Mine is set to false.
It does appear the device recognizes the maintenance window from the ServiceWindowManager log:
A Timer Event has occurredServiceWindowManager05/18/2015 7:00:00 AM1728 (0x06C0)
Sending Message SERVICEWINDOWEVENT:END eventServiceWindowManager05/18/2015 7:00:00 AM1728 (0x06C0)
The Service Window={329B9285-701D-4760-9ABA-6A891799BA89} has ended at 5/18/2015 7:00:00 AMServiceWindowManager05/18/2015 7:00:00 AM1728 (0x06C0)
Checking Service Windows to find Next Event.....
ServiceWindowManager05/18/2015 7:00:00 AM1728 (0x06C0)
Next Event Time is at 5/18/2015 10:00:00 PM. Service Window with ID:{79F12DAC-ABCC-47E7-92DC-0BE4C2830299}. Is the next event the beginning of the window? NoServiceWindowManager05/18/2015 7:00:00 AM1728 (0x06C0)
Scheduling the Timer TaskServiceWindowManager05/18/2015 7:00:00 AM1728 (0x06C0)
Scheduled the timer to fire on 5/18/2015 10:00:00 PMServiceWindowManager05/18/2015 7:00:00 AM1728 (0x06C0)
Also, I know each update is considered to take 20 minutes, and the window needs to accommodate all of the updates for even one to install. There is only one update scheduled to install after the deadline.