# Working with AppSettings

AppSettings contain various application settings that are not visible in the Installation Configurator interface. If a user wants to configure these settings, they should open the appSettings.config file and manually update the desired values.

The default location of the appSettings.config file is: C:\Program Files (x86)\Atlas Copco\ACDataCommunication

After making changes to the file and saving it, the AtlasCopco_DataCommunication service must be restarted for the new settings to take effect.

In this Section

- TTL (Time To Live) for ACDC-Gateway messages