I looked into this once and almost gave up on it entirely until I found a rather 'cheaty' way of alerting users of info without suspending execution, that works on my users machines.
We run Windows 10 here and have SCCM installed for software distribution and updates. I've absolutely no idea if that's mandatory in Windows for updates or not, so I've no idea if this works for you.. but the following code works a treat here if you don't mind the notification resembling a Software Centre notification:
Sub Toastnote(ccmTitle, ccmText)
Shell "c:\windows\ccm\sctoastnotification.exe """ & ccmTitle & """ """ & ccmText & """ "
End Sub
You can call it with:
toastnote "title goes here","message goes here"
It creates a little pop-up that looks like this:
![enter image description here]()
As I say, it's a bit of a cheat and might confuse users who regularly receive CCM notifications, but for my user-base that wasn't an issue.
Lastly, it's probably worth wrapping this in an IF statement that checks the .exe file exists - just a thought..