We are pleased to inform you that the license authorization for KDAN PDF Permanent License Windows (v2.2 and higher) has been upgraded to enhance users' experience. Starting June 28, 2024, the old license key will no longer be in use.  

Affected KDAN PDF Permanent License Versions

KDAN PDF Permanent License (Windows .exe version) v2.1 and below

KDAN PDF Permanent License (Mac .dmg version) v3.15.1 and below

Purchased from KDAN Store, sales partners, or other third-party platforms

Issue description

When entering your license code in KDAN PDF Permanent License Mac, you may encounter the following issue:

• Unable to activate using the license key
• An error message appears: “No network. Please try it later.”

Possible causes

This issue may occur due to the following reason:

• The old license key system has been discontinued after June 28, 2024
• Your current app version still relies on the old license key mechanism

Solutions

Please follow the steps below to resolve the issue:

Step 1: Check your app version

1. Open KDAN PDF Permanent License Windows
2. Go to Settings > About
3. Confirm whether your version is:
   • Windows: v2.1 or below
   • Mac: v3.15.1 or below

Step 2: Request a license upgrade

Since the old license key is no longer supported, you will need a new upgraded license.

1. Contact the KDAN support team at helpdesk@kdanmobile.com
2. Provide your purchase information if available
   • Invoice
   • License Key (XXXX-XXXX-XXXX-XXXX)
   • The email address you used for the purchase
3. Our team will send you an upgraded license within 3 business days

Our team shared the latest updates with users in January 2024. However, due to data protection policies, we were unable to reach out to users who purchased KDAN PDF from other sources. 

Thank you for your understanding and support.

Notes

If you have previously contacted us to upgrade your license but are still unable to access your advanced features, please visit the Licensing Service Center and try removing your license, then reassigning it to see if this resolves the issue.

• Licensing Service Center
• How to Assign / Remove Licenses
• How to Activate Your Product

Updated April 21, 2026 10:00