Some Articles are not showing in the category on frontend

I have a weird problem, i have product who is assigned on a category, i can find him in the backend and everything looks fine.When i make a search on the frontend, the same product can be found in the search, but when i try to find the product in the assigned category on the frontend the product is missing.Anyone knows what went wrong?

Hi Triology,

have you tried to recalculate the product counter for the specific category? There is a button on the admin category page for this action, maybe this could help to show your article within the category

Yes, that was the problem.Thank you very much.