It appears to be occurring in response to an activity from my browser - currently using Brave but it was also occurring with Chrome. I am using the latest update of Directory Opus.
If you turn off Explorer Replacement, do you get File Explorer windows opening instead of Opus windows?
Or do Opus windows still open, or nothing?
Thanks for the suggestion - Tried turning off DO as Explorer replacement - Explorer is not "self initiating" a new instance.
And Opus is no longer appearing either?
Try setting it to the "replace file system folders" option. Does that work OK?
Which folders were opening before?