How do I get a program to read changes I have made to a config file?

Question

I am trying to run a program that monitors several modems and other units. When the program boots, the following error comes up:

Unable to establish a connection to the database at 192.168.1.1

I went into the config file as an administrator, found all instances of 192.168.1.1, and changed them to the correct IP address.

When the program ran after the changes, the same error came up. If I run the program as an administrator, then it accepts the IP changes but if I exit and try to go into the program again (not as admin) it gives the error.

The customer that we are delivering this software to will not be able to run the program as an admin. How do I get my program to accept the config file changes?

Thanks!