Possible workarounds to ensure that all computers reboot during their scheduled window include:
The best choice is to not use repeating schedules.
Another possibility is to define a repeating reboot schedule (i.e. every 5 minutes for 20 minutes starting at 3:00 a.m.). If the initial reboot attempt fails, then the agent will make up to four additional attempts before reaching the end of its window.
There was another similar issue explained in KB 52542 that should also be researched..
Applies To
Notification Server 6.0.6074
Patch Management Solution 6.2 Service Pack 1
Software Delivery Solution 6.1.1058
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