Prior to starting project upgrade, the Strategy configuration wizard shows the locations as shown below:

Sample Code/Error
Log file: C:\Program Files\Common Files\MicroStrategy\Log\MDUPD-x-x.log
However, the log file may not be found in the specified location after "Finish" button is clicked and unable to confirm what has gone wrong. If an issues happens prior to the generation of MDUPD-x-x.log, refer to the MACfgWiz.xml file, which in Windows is found in:
Sample Code/Error
C:\Program Files\Common Files\MicroStrategy\Log
In a Universal environment, this file can be found in:
<Install Directory>\log