When a user has multiple authentication accounts such as Active Directory and Azure Active Directory, only one of the accounts can be added to K2 Management security.
- Ensure you have K2 (5.1) installed.
- Get the K2 Five (5.1) FP1 from Regional Support.
- Install the K2 Five (5.1) FP1 to apply the fix.
- It is recommended to refresh the browser cache.