We need to make a small change to a string in our application’s app.config file.
To avoid a full packaged roll out to all PCs we want to replace the app.config file on each one.
Will the application lock the app.config file if it is currently using it all will it allow it to be replaced?
App.config is cached on first access, so the file is not locked for the entire duration of the program execution.
That said, any changes you make will not have affect until the program is next restarted.