'how manage setup of different versions?

example

1 user installs version 1 of our code

2 for an error he installs again. the exe is owerwritten without changes and nothig bad happens.

3 version 2 is distributed with the installer.

4 the installed sw is perheps overwtitten. it is what user generally wants but if he prefers to mantains the old version how it could be done?

I have not yet tried any solution

thanks you for your attention

versioning

Sources

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