Question

Is there an official list of Inno Setup messages like “WinVersionTooLowError” somewhere? I need to change the “This will install AppName on your computer” but don’t know how. Thanks!

Answer 1

The default language file should have a complete list, you can view the online CVS version here.

The translation download page contains this note:

Starting with version 5.1.0, the Inno Setup compiler will accept a
translation even if it’s missing messages (it will use the default
English messages to replace them) or contains unknown messages.

so you should be able to create a custom English language file that only changes a couple of strings if that is what you want, but it is also possible to override the strings without using language files.

You might also want to take a look at Inno Setup Easy Translator