Thanks to TT Customer Support. The issue was resolved. Here is the quick fix for error 5639 & 5640
1 - Stop the IntuitUpdateServiceV4 from task manager
2 - Right click on the TurboTax 2020 icon-
3 - Click on properties -->select Compatibility tab -->check the box beside "Run this program as an administrator" --> ok
4 - Start the TurboTax 2020
