Navigate to the %temp% or %temp%/<sessionID> folder, where the <sessionID> is the integer of the session you are in. Example: %temp% or %temp%/2. The name of the log file is MSI*****.log, where the asterisks represent random letters.

You can find the Looker Installation logs in the %programdata% folder.

If you have upgraded to the latest version, the Looker installation logs are still located in the C:\Users\UserName\_insights folder.

You can find the Insights Portal logs and Provision logs in Windows Event Viewer. Use the Filter Current Log option to filter by Event source.