How to Resolve the “Licence Verification Failed. (1006)” Message After a KDS 2.0 Internet Update

1. Symptoms

KDS 2.0 / KDS 2.0 

• After the Internet update is completed, clicking the Install button launches Smart Launcher and prompts for a licence key.
• After the licence key is entered, a failure message appears during verification.

• The product installation is complete, but the verification process cannot proceed.

2. Root Cause

🟥 1) Incorrect tablet date/time settings (primary cause)

• The tablet’s Date & Time settings are not configured to update automatically.
• Licence verification uses server-time-based validation logic.
  • Verification fails when the tablet time does not match the server time.

🟥 2) The licence key itself is not the cause

• The licence key entered by the customer is in the correct format.
• Verification was successful using the same licence key after the settings were corrected.

▶ Overall Assessment

• Invalid licence key ❌
• KDS 2.0 app defect ❌
• Server issue ❌
• Tablet Configuration Error ✔

3. Policy Decision

4. Final Resolution

✔ Enable automatic date and time settings on the tablet

• Settings path:

  Settings → General/General management → Date and time → Automatic date and time: On

✔ Restart the KDS 2.0 app and retry licence verification

✔ Confirm that licence verification is completed successfully

• The software upgrade can then proceed normally.