"User Authentication Failed" When Accessing KDS Diagnostic Functions

○ Symptom: When accessing KDS diagnostic functions, the "User Authentication Failed" message appears.

○ Solution 1. Log In Again

1. Log out of KDS.

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

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

If the issue is not resolved by following 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. Navigate to the following path on the tablet.

   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, log in, and try again.