Cumulus Support

v3090. running as a service in Win10 1909

I happened to check my website this morning (after last nights "gusts") and found it had stopped updating.
A check of CMX showed that it was offline. It looked to have stopped around tea time last evening.
It runs as a service in Win10.
The CMX log says it's shut down successfully. However, I don't know why.
The laptop it runs on does not suspend or sleep.
Windows 10 hasn't restarted and it's not allowed to deploy updates by itself and last updates were installed 12/08.
There's nothing in the Windows System Event log specific to the time.
In the Windows logs, application log there are two entries at the stop time:
1st:
- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name="CumulusService" />
<EventID Qualifiers="0">0</EventID>
<Level>4</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2020-08-20T16:56:04.852412900Z" />
<EventRecordID>6835</EventRecordID>
<Channel>Application</Channel>
<Computer>MB7UCW</Computer>
<Security />
</System>
- <EventData>
<Data>Service stopped successfully.</Data>
</EventData>
</Event>

2nd:
- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name="CumulusService" />
<EventID Qualifiers="0">0</EventID>
<Level>4</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2020-08-20T16:56:04.852412900Z" />
<EventRecordID>6836</EventRecordID>
<Channel>Application</Channel>
<Computer>MB7UCW</Computer>
<Security />
</System>
- <EventData>
<Data>PowerEvent handled successfully by the service.</Data>
</EventData>
</Event>

So I'm not sure what has triggered the power event. I've looked at other significant log files and can't see anything else occurring at this event time.
So a little baffled.

However, i noted that there was a new version available, so i update the .exe to v3091

b3080 did not log the power event detection, it just called the service stop routine.
b3081 will log the event if the stop was caused by Windows sending it a power event (going to standby or hibernate mode).