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When I try to open the application after downloading and installing, it pops up a dialog box attached below which says I need to reinstall it.
@saeeda_09
Where do you got the software from, what is your exact OS, what did you download and how do you installed it?
And why do you want to start with Qt 5.12? It's pretty old
@Pl45m4 I downloaded it from https://download.qt.io/archive/qt/5.12/5.12.12/ and my OS is 64-bit Windows.
