mrwul - You've posted this in the X1 6.7.4 forum, but based on this list of executable files, at the very least, you have X1 V7 installed. You may have both 6.7.4 and 7.0 installed on the same system.
To answer your question though, short of manually terminating the remaining executable files, X1 does not terminate all processes on shutdown.
It makes sense that X1.exe and X1Service.exe are no longer there on shutdown; X1.exe supports the UI, X1Service supports indexing. X1Systray keeps the X1 Icon active in the system tray so the only way to eliminate that process is to configure X1 to not show the icon in the tray. X1Filemonitor.exe handles File Real-Time Indexing. When the interface is closed this process catalogs changes to the files for future index updating on restart. Disabling real-time indexing of files would eliminate that process.
Finally, the X1masterservice.exe is my "clue" that you have V7 installed here. The MasterService was introduced in V7 and is always there - unless you manually terminate it. The MasterService is monitoring for the existence of the other V7 services.
To answer your question though, short of manually terminating the remaining executable files, X1 does not terminate all processes on shutdown.
It makes sense that X1.exe and X1Service.exe are no longer there on shutdown; X1.exe supports the UI, X1Service supports indexing. X1Systray keeps the X1 Icon active in the system tray so the only way to eliminate that process is to configure X1 to not show the icon in the tray. X1Filemonitor.exe handles File Real-Time Indexing. When the interface is closed this process catalogs changes to the files for future index updating on restart. Disabling real-time indexing of files would eliminate that process.
Finally, the X1masterservice.exe is my "clue" that you have V7 installed here. The MasterService was introduced in V7 and is always there - unless you manually terminate it. The MasterService is monitoring for the existence of the other V7 services.