Article - CS332986
Error "Activation failed; failed to authenticate with the license server" in PTC Kepware Products
Modified: 13-Apr-2026
Applies To
- Kepware Server (formerly KEPServerEX) 6.0.2107.0 to 7.0
- ThingWorx Kepware Server (legacy) 8.0 to 6.18
Description
Activation failed. Failed to authenticate with the license server
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