If none of these options do not work, please review these articles.
https://ttlc.intuit.com/community/troubleshooting/help/running-the-windows-system-file-checker/00/26...
https://ttlc.intuit.com/community/installing/help/troubleshooting-and-repairing-problems-with-windows-installer-and-the-microsoft-net-framework/00/25828
