qsqlite4.dll
(or qsqlite4d.dll
, if you are distributing a debug build) from your $QTDIRpluginssqldrivers
folder to a sqldrivers
subfolder in your program folder. Qt should then be able to pick it up from there, if you don't use anything special..windowssystem32
, there's a specific directory structure to follow. The exact paths depend on your Qt installation and your application path.