What a time wasting blood pressure raising fiasco. Nothing worked for me until I changed the temp variables AND turned of all AV apps AND rebooted AND installed new C++ Redistributables AND manually turned off the Intuit Updater in Services. The last step was needed to deal with "Error 1921: "Service 'Intuit Update Service' (IntuitUpdateService) could not be stopped." Finally got it working after an hour time wasting. Sorry for those that have been at it for days.