Qt OLEAUT32.DLL, COMDLG32.DLL not registered? [clo

Question

I'm developing a new software in Qt but since a few days I get some confusing error messages when I run the project:

mincore\com\oleaut32\dispatch\ups.cpp(2128)\OLEAUT32.dll!75FEEF12: (caller: 75FEE58F) ReturnHr(1) tid(10a0) 8002801D Bibliothek nicht registriert.
mincore\com\oleaut32\dispatch\ups.cpp(2128)\OLEAUT32.dll!75FEEF12: (caller: 75FEE58F) ReturnHr(2) tid(10a0) 8002801D Bibliothek nicht registriert.

After I try to open an XML file with a QFileDialog a new error message appears:

shell\comdlg32\fileopensave.cpp(14267)\COMDLG32.DLL!76FC7BED: (caller: 76FF686C) ReturnHr(1) tid(10a0) 80004005 Unbekannter Fehler
    CallContext:[\PickerModalLoop] 

I really don't know how to fix the problem, maybe it exists because of a new windows10 update?

Both of the messages won't crash the program. The first message appears every time I run project, the second only appears when openening an XML file, this also leads to not being able to work with the program because I need to open that XML file. I'm pretty sure the problem does not come in with a code problem.

Does anyone can help me? I reinstalled Qt, the problem still exists.