"User Authentication Failed" When Accessing KDS Diagnostic Functions

○ Symptom: KDS displays a "User Authentication Failed" error when accessing diagnostic functions.

○ Solution 1: Sign in again

1. Log out of KDS.

2. Close all apps running on the tablet, including KDS.

3. Launch KDS, sign in, and try again.

If the issue is not resolved using the steps above, proceed with Solution 2.

○ Solution 2: Clear the KDS app data and cache

1. Log out of KDS.

2. Close all apps running on the tablet, including KDS.

3. On the tablet, navigate to the following path.

   Path: Settings -> Applications -> KDS2.0/KDS -> Storage

4. Select Clear Data or Clear Cache to clear the app data or cache.

    (All inspection data stored on the tablet will be deleted.)

5. Launch KDS, sign in, and try again.