Plus, when you delete it Windows will generate a new config.msi file with current information. There was no way that that info would have helped Windows resolve a current problem. They still had roll-back information from 1995.
This file seems to be just a record of installs and information for Windows on how to undo any changes that have been made to the computer. It has been a couple months now and no bad side effects have occured.
After some research of this file's use, and reading the text in the file, I decided to delete it. I was upgrading some things on it recently and found that there was a file named 'config.msi' on the root level of C: that was taking up 150MB of space. My parents have a computer that they bought back in 1995 that still has Win 95 on it. msi files are hidden, so that may be why you don't see any of them on your drive.
