Troubleshooting: "License check failed (1006 / TimeStampError)" in Smart Launcher (GDS Smart / KDS 2.0 / GENESIS Smart)

This guide explains the causes of the "License check failed (1006)" or "License check failed (TimeStampError)" message when authenticating or installing in Smart Launcher on GDS Smart / KDS 2.0 / GENESIS Smart, and provides step-by-step solutions.

1. Symptom

• Error Message During Authentication: When you install, update, or authenticate a license key in Smart Launcher, an error pop-up appears: "License check failed. (1006)" or "License check failed. (TimeStampError)".
• Unable to Proceed at Authentication Step: Product installation is completed, but it cannot proceed further at the authentication step.

2. Root Cause & Policy Decision

1) Tablet Date & Time Setting Error (TimeStamp Error)

• Date & Time Not Synchronized: The tablet's Date and time is not configured to Automatic or does not match the server time.
• Server Time Verification Logic (Up to ±2 Minutes Tolerance): License authentication validates the tablet time against the server time (allowed tolerance: up to ±2 minutes). If the tablet time does not match the server time (a difference of 2 minutes or more), license verification failure (1006 / TimeStampError) may occur.

2) Corporate / Workshop Network Firewall Blocking

• Security Network (Corporate Firewall, etc.) Blocking: Error 1006 may occur when using a security network (such as a corporate or workshop firewall).

3) Not a License Key Issue

• Valid License Key: The entered license key format itself is not defective.
• Same License Key Succeeds After Changing Date & Time Settings: After changing the tablet Date & Time settings, authentication succeeds with the same license key.

4) Policy Decision Summary

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3. Solutions

A. Enable Automatic Date and Time in Tablet Settings

1. Go to Settings on your tablet PC:
   
2. Open "General management":
   
3. Select the "Date and time" menu:
   
4. Enable "Automatic date and time": Then relaunch Smart Launcher, check that there are no typos in the license key, and retry authentication.
   

B. If the Error Continues Even When Set to Auto — Manually Select Another Country Time Zone & Reboot

If the 1006 / TimeStampError message continues to appear even after setting the tablet's Date & Time / Time Zone to Auto, follow the steps below:

1. Manually Select Another Country in Time Zone Settings: In Date and time settings, set the time zone manually (Select time zone), choose a different country/region, and save the settings.
2. Reboot the Tablet: Restart (reboot) the tablet.
3. Retry Authentication in Smart Launcher: After rebooting, open Smart Launcher and try authentication again.
4. Set Date & Time Back to Auto After Completing All Installations: If authentication succeeds after changing the time zone to another region/country, complete all installations first, and then change the Date & Time setting back to Auto.

C. Connect a Mobile Hotspot & Check Network Firewall Exceptions

1. Connect a Mobile Hotspot and Retry: If the countermeasure above does not work, connect a mobile hotspot to the tablet and try installation and authentication again.
2. Corporate / Security Network Firewall Exception: When using a security network (such as a corporate or workshop firewall), ask your network administrator to add a firewall exception (unblock access) for the authentication/GSW servers.

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4. Related Help Center Guides

• Troubleshooting: Error Code 100 (TimeStamp & Security Certificate Download Error) After Login on GDS Smart / KDS 2.0 / GENESIS Smart
• How to Deal with KNOX Authentication Error During Smart Launcher Installation
• How to Fix Login Failure on GDS Smart, Genesis Smart, and KDS 2.0

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