I had a problem the other day reinstalling Quickbooks for a customer. The program would not open and when I tried to reinstall it and an error appeared about not being able to overwrite some files in the CONFIG.MSI folder. Let me explain what the CONFIG.MSI folder is, where its located, and if you can remove it safely.

First of all, the CONFIG.MSI folder is a hidden folder on the root drive of Windows, usually Drive C. The folder is used by the Windows Installer process during an installation of software. It saves files with the extension of .RBS and .RBF. These are Rollback Script Files used by the installer to uninstall recent changes if an install fails somewhere along the way. The rollback script file (.rbs) is always stored in the Config.msi folder on the disk where the operating system is installed. The .rbf files are stored in the Config.msi folder located on the disk where the program that is being backed up currently resides. These can be two different drives.
   

Can the CONFIG.MSI folder and its files be deleted safely?

Essentially the CONFIG.MSI folder contains backups of files that are being installed or updated during a program installation. Upon a successful completion, this folder and files are deleted automatically. However, sometimes the installer program fails to remove these files. In this case, you may safely delete the CONFIG.MSI folder and files from your hard drive. Follow the steps below to access and remove the CONFIG.MSI folder.

Reboot the computer and try to download Windows Updates, if they still fai