Log file errors 1711 & 1603
SOLUTION: Right-Click in the installer and choose Run as Admin.
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HOW TO GET THE LOG FILE:
After SN8 installation fails, go to C:\Users\YourUserName\AppData\
Submit the error log in a ticket request for assistance.
Can't find the recent log file, please see here:
https://support.microsoft.com/en-ca/help/223300/how-to-enable-windows-installer-logging