So for this I'm obviously going to have to change the service so that it can detect the version and compile whether it is 20131206 or 20181025/higher ... That should be an interesting task.

If anybody has already done this please let me know!

The issues reported so far in this thread rg 20131206 are still unresolved. :-(

On one system, Callback_Running is never called.

On another system, Callback_Running is called but Win32::Daemon::State() never returns SERVICE_RUNNING when queried by Callback_Running, even though it is set by Callback_Start. I have not been able to confirm that doubling the line mentioned earlier resolves this issue.

Thanks for all the help so far. This has been difficult to coordinate client screentime with Monk availability.

Good news! We found the call to set the delay has a max somewhere between 5000 and 10000 on the affected systems. So the workaround, which is working:

our $isleep = 15;  # Number of seconds to sleep between iterations
{
    my $counter = 0;

    sub Callback_Running {
        my($Event, $Context) = @_;
        if(SERVICE_RUNNING == Win32::Daemon::State()) {
            $counter += 5;
                print $fh $counter . "\n";
            if ($counter >= $iSleep * 60) {
                print $fh "Checking in.\n";
                # do stuff;
                $counter = 0;
            }
            $Context->{last_state} = SERVICE_RUNNING;
            Win32::Daemon::State( SERVICE_RUNNING );
        }
    }
}
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However, resume after pause still does not work

C:\Users\john\test>net continue TestService
.
The Test Service (TestService) service failed to resume.

More help is available by typing NET HELPMSG 3538.
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After pausing Repeated messages "The Test Service (TestService) service has reported an invalid current state 0." in event viewer. Continue does not work.

Trying to implement the 2018 version of Daemon into my code.

Basing on https://metacpan.org/pod/release/JDB/Win32-Daemon-20181025/lib/Win32/Daemon.pm

However it seems SERVICE_STOPPED and SERVICE_RUNNING ate not defined ???

Undefined subroutine &Win32::Daemon::SERVICE_STOPPED called at test-sv
+c.pl line xxx.
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