Not specifically that I allowed but I just checked and the option 'Allow anonymous' clients is enabled.
Not sure, how this is enabled back but i remember I disabled earlier.
Now I am disabling it again.
And all the users who use the application do have a license.
Any information is quite helpful
My last working with te audit-logs is many years ago with QV 10. But if I remember correctly there wasn't never actions without a user.
Another point could be the used QV release (maybe there is a bug) and also the option to enable the extensive logging (it could lead to performance issues).