KUKA KSS01006 License Error – Causes, Diagnostics & How to Fix

Error Code Overview

• Error Code: KSS01006
• Alarm Message: License Error
• Category: Software Licensing / Digital Security / System Options
• Severity: Medium
• System: KRC Controller / KUKA License Manager / .aslx License Files
• Impact: Licensed software options may be disabled or locked in DemoMode

Quick Fix for KUKA KSS01006

If KUKA KSS01006 License Error occurs:

• Check whether the required technology package license is installed
• Verify the .aslx license file matches the controllerhardware
• Confirm the option is not running in expired Demo Mode
• Restart the KRC controller after importing the license
• Restore the license container from backup if corrupted
• Reinstall the correct WorkVisual/KSS package if deployment failed

In most cases, KSS01006 occurs when the controller cannot validate a required software license for an enabled option package.

What Does KUKA KSS01006 Mean?

KSS01006 indicates that the KUKA controller has detected a missing, invalid, or unreadable software license required for one or more enabled features.

Affected packages may include:  

• KUKA.SafeOperation
• KUKA.ConveyorTech
• KUKA.RoboTeam
• KUKA.EthernetKRL
• other optional technology packages

When the required license is unavailable:  

• the feature may be disabled completely
• the package may rema in in Demo/Test Mode
• automatic program execution may be restricted

Common Causes of KUKA KSS01006 License Error

1. Hardware Fingerprint / Target ID Mismatch

KUKA licenses are typically tied tocontroller hardware.

If major components are replaced, suchas:  

• KPC / industrial PC
• motherboard
• SSD / cloned system drive

the controller fingerprint may change andinvalidate the license.

2. Demo License Expired

Some tech packages are installed withtemporary trial/demo licenses.

Once expired:  

• the software remains installed
• but functionality becomes locked

3. Corrupted License Container

License storage files may become damageddue to:  

• improper shutdown
• SSD/file system corruption
• failed update/recovery process

Th is often appears together with storage-relatedalarms like KSS01004 .

4. Incorrect WorkVisual Deployment

Deploying a project with enabled techoptions but without the matching physical license can trigger KSS01006.

Typical example:  

• option package enabled in project
• but license not imported to controller

How to Troubleshoot KUKA KSS01006

Step 1 – Open KUKA License Manager

Check the current license status.

Verify:  

• installed licenses
• expiration dates
• demo/trial limitations
• missing option packages

Step 2 – Confirm Hardware Has Not Been Replaced

Review recent maintenance history.

Ask whether any of the following werereplaced:  

• SSD cloning/replacement
• KPC swap
• motherboard repair

If yes, the original license may nolonger match hardware.

Step 3 – Restore License Backup

If available:  

• reload previously archived .aslxfiles
• restore original license package backup

Step 4 – Verify Tech Package Installation

Ensure:  

• the installed software option matches purchased license
• the correct KSS/software version is installed

Step 5 – Reboot and Test

After correction:  

• restart controller
• verify the option activates normally
• confirm SmartHMI clears the alarm

5. Recommended Replacement Parts

Pro Diagnostic Tip

• If KSS01006 appears immediately after SSD cloning or controller repair, the issue is often not the software itself.
• The most Common real-world cause is that the cloned/replaced hardwarechanged the controller’s internal hardware ID, making the original KUKA licenseinvalid.
• Many technicians mistakenly reinstall software multiple times when thereal fix requires license reissue/rebinding.

How to Fix KSS01006 Permanently

Depending on root cause:  

• Expired Demo →Install permanent license
• Missing License →Import correct .aslxfile
• Hardware Change →Reissue license for new Target ID
• corruption →Restore backup/recovery image
• Wrong Deployment →Reconfigure WorkVisual package setup

How to Prevent Future License Errors

To reduce future KSS01006 alarms:  

• Back up all .aslxlicense files before maintenance
• Archive full controller backups before SSD replacement
• Avoid cloning/replacing hardware without checking license binding
• Validate tech package compatibility before WorkVisual deployment

Related Errors

• KSS01005 Software option missing – Oftenoccurs when the software is present but the license is not.
• KSS01007 Version incompatibility – Triggeredwhen a license for an older KSS version is applied to a newer system.
• KSS01004 File system error– Can lead to the corruption of the locallicense database.
• KSS01010 Diagnostic message only – Sometimesindicates a "License grace period" warning.

These errors may be related tosystem configuration issues, software option activation, or network communication problems, which may also prevent proper license validation.

FAQ

What causes the KSS01006 License Error?

The KSS01006 License Error is typicallycaused by an expired, missing, or invalid software license that preventsthe robot from using certa in licensed features.

How can I fix the KSS01006 License Error?

To fix the error, verify the licensestatus , reactivate or renew the license using the KUKA LicenseManager , and ensure that the correct license is assigned.

Can th is error affect robot functionality?

Yes, the KSS01006 License Error will prevent access to licensed features , which could lim it therobot’s capabilities or prevent it from performing critical functions.

How can I prevent future license errors?

Regularly verify the license status , back up license files , and ensure network stability if using a server-basedlicense to avoid connectivity issues.