what tool? I noticed a message here about that topic, but it is gone.
After reinstall of avast (without removal tool) Calibre did find 7 of the 12 books when the shields were on . Better but still strange that it is not 9.
The only thing I can think of is that Avast is making the system TO SLOW and Calibre exits the search to early because of that.
Thank you for thinking with me.