Login Error: String cannot be of zero length

The following error might be observed after changing the authentication method of a user:

One possible solution:

Check the parameters passed to CmStartUp.bat through the CM Shortcut:

The correct values for different authentication methods are:

• Single Sign-On: "$"

  C:\cm\cm675\scripts\CMStartUp.bat ma CMPROD $

• Password: the username prefilled into the login form

  C:\cm\cm675\scripts\CMStartUp.bat ma CMPROD testuser

• Local user name / Operating system (OS): "/"
  

  C:\cm\cm675\scripts\CMStartUp.bat ma CMPROD /