Expand the component tree, the maintenance tool immediately crashes

[Jun CH]

[jsulm]

@Jun-CH Try to start from a terminal (cmd.exe) and see whether there are any error messages.

[Jun CH]

The situation is the same, without any print information

[jsulm]

@Jun-CH Can you translate the text in the message box?
You can also check Windows event log for more information.
And try to disable anti virus software.

[Jun CH]

@jsulm Sorry, I found a similar screenshot

[jsulm]

@Jun-CH So, the installer is hanging (not responding).
Try to disable anti virus software before running the installer.
And check Windows event log.

[Jun CH]

@jsulm
The configuration repository will also crash,
I have set other source addresses in QT5.15
Is there an old configuration file that is incompatible with MaintenanceTool.exe 4.2.0.0?

[Jun CH]

I use the earlier program qt-unified-windows-x86-3.2.3-online.exe and the situation is the same
Modify repository: crash
Expand the component tree: crash

[Jun CH]

Completely uninstall QT and reinstall it, everything is fine