There are few special files that TLIMS uses to connect to the database server. The main configuration file is called: TDSConnections.data.
The location of this file is a special folder:
C:\ProgramData\Trinity Data Solutions\TLIMS
The file is binary encrypted file that contains the properties needed to connect to the database. Without a proper version of this file, you will not be able to run TLIMS.
You can NOT edit the contents of the file because it is not a true text file (even though you might be able to look at through a text editor. This file is a binary generated special format configuration property holder.