Hi,
In this case, the only suggestion I could provide is to capture logs and traces to find out what services or process that have triggered other application. But kindly note that log analysis hasn't been supported in our forum yet.
1.Event log checking:
TerminalServices-RemoteConnectionManager and TerminalServices-LocalSessionManager logs to view information about connections.
Step 1: Press Windows+R to open the Run dialog, enter eventvwr (or eventvwr.msc) and hit OK.
Step 2: Navigate to Event Viewer\ Applications and Services Logs\ Microsoft\ Windows\ TerminalServices-*
2.Processmonitor
https://learn.microsoft.com/en-us/sysinternals/downloads/procmon
3.Last but not least, may I confirm with you that whether or not it is the same application open for several times? If there is any clues for occasionally open application, please check if any scheduled tasks have been set
Hope this helps and please help to accept as Answer if the response is useful.
Thanks,
Jenny