The most common problem I am hearing from my friends now a days is
Microsoft Dynamics Service is connecting to different DataBase than Customconfig file database..
You can try the below solution to make the customsettings.config file change take effect:
You need to restart both services
Microsoft Dynamics NAV Business Web Services
Microsoft Dynamics NAV Server service.
- means that both services needs to be stopped
- change Customsettings.config file and save.
–Start both services.