Upon completion of an upgrade, Windows Media Services creates a log file, Wmsupgrade.log. You can use the log file to understand how your configuration was migrated during the upgrade process. The log describes in detail how every part of the previous configuration was migrated, including any errors that may have occurred.
Wmsupgrade.log is located in %systemroot%\System32\Windows Media\Server. To view the log file, you can open the file in a basic text editor, such as Notepad.