They should be deleted automatically when a program installer has completed
the installation; however, this doesn't always happen as you can see. After
rebooting your PC, delete them.
Config.msi contains backups of files from a program installation. This
folder is deleted automatically. Sometimes an installer fails to remove
it. You can safely delete the CONFIG.MSI folder and files from your hard
drive.
Config.msi contains backups of files from a program installation. This
folder is deleted automatically. Sometimes an installer fails to
remove it. You can safely delete the CONFIG.MSI folder and files from
your hard drive.