Visit the JAM Software Customer Area or contact support directly through their official website.
There are several reasons why a user may need to update their TreeSize license key:
Searching for a is a dangerous shortcut. The vast majority of such tools are malware-laden scams. The few that “work” temporarily will break with any genuine update, leaving you with a corrupted installation, potential data loss, and no support.
This article clarifies:
You need to refresh the existing license in the software to reflect renewed maintenance or to move the license to a new machine.
| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | “License key is valid, but not for this version” | Your update rights expired before this release. | Purchase a renewal or downgrade to your last eligible version. | | “Invalid key format” | Copy-paste added spaces or missing hyphens. | Re-copy from original email. Type manually if needed. | | “Activation limit reached” | You used the key on too many machines. | Deactivate unused installations (Help → Deactivate). Contact support to reset. | | “License server unreachable” | Firewall or proxy blocking port 443 (HTTPS). | Allow activation.jam-software.com in your firewall. Use offline activation. |
Managing TreeSize License Key Updates: A Comprehensive Guide
JAM Software offers from the purchase date for Professional and Personal editions.