This question already has an answer here:
I have a plan to travel from Doha to Moscow using KLM airlines with transit 2 hrs in Amsterdam, the Russian embassy has already issued a tourist visa and posted it on my passport.
My question, since I'm a Syrian citizen has resident permit in Qatar. Do you think I will face any issue or refused boarding by the airline at Qatar or while transferring planes in Amsterdam since the 2Hrs transit will be in Schengen area and my previous Schengen visa is already expired??.
Please consider that the Syrian citizens has different consideration than any other nationalities in the airports, because of the civil war situation.