KB486073: “Invalid Control Flag” error in log when using Integrated authentication (Kerberos) in MicroStrategy Web 2021

The MSTR Web logs will show following entry and indicate a configuration error: 
 

… 

Caused by: java.io.IOException: Configuration Error: 

Invalid control flag, COM.SUN.SECURITY.AUTH.MODULE.KRB5LOGINMODULE 

… 

 

CAUSE: 

This error indicates a configuration error with the jaas.conf file, whereby the content was copied over from a chat (within MS Teams) and hence formatted in a non-readable way for the configuration to be successful. 
 

ACTION: 

  
Please make sure the jaas.conf file is configured and formatted properly (with proper whitespaces and no tabs) for Kerberos/Integrated authentication to be successful.