[Interest] Windows deployment. Failed to start because of missing platform plugin...

[Igor Mironchik]

Hi,

I'm trying to deploy Qt Windows application. And it failed to start with 
the next message...

This application failed to start because it could not find or load the 
Qt platform plugin "windows".

Reinstalling the application may fix this problem.

Platform plugin is exist in ./platforms/qwindows.dll

How can I solve this problem?