Can I extend a Schengen visa for the Netherlands?
You can only extend a short-stay Schengen visa (less than 90 days) in emergencies, for example if you become ill. You can only do this through the Immigration and Naturalisation Service (IND) and only under strict conditions.
Conditions for extending a Schengen visa
In order to extend your short-stay Schengen visa, you must meet strict conditions. Check what these conditions are and read about how to apply for an extension on the IND website.