When running the Desktop Apps silent installation, we receive the following error message;
"Invalid Class"

This error can occur due to an issue with Microsoft WMI. To correct any issues Microsoft WMI may have, please do the following;
  1. Open Command Prompt as Administrator.
  2. Enter the command, 
    winmgmt /resetrepository
Once done, please reattempt the installation.

KBA applicable for both Cloud and On-premise Organizations.