Hello Popey ( did you eat a lot of spinach as a child?! )
I don't think that this alert is a false alert. I guess, the rundll32.exe wants to write to the harddisk cause of an install. If you enabled realtime scanning the FSSM32.exe will scan every activity on your harddisk except on folders you exclude. The Windows Host Process is one of the "root" services from Windows so many tasks will be started by this service.
You can try to add the desired installation folder to the exclude list. In our company I did the same for the Visual Studio compile folders.
Btw: I get the same error while installing / deinstalling software which puts files to the Windows-folder.
As I get it right you are developing selfmade software to your testers. The "Use server queries to improve..." has no sense for you in this case, cause the F-Secure Server won't know the MD5 of your programmed tool. So the reference to the F-Secure Server won't help. As I said: we had a similar problem on our developing machines.
I really think the exclusion of the installation folder will redurce the messages you get.
You can try this and report your experience...
Best regards from sunny Germany
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