Article - CS400862
"FlexNet Licensing Error 15,570" when launching PTC Modeler
Modified: 16-Mar-2026
Applies To
- PTC Modeler 10.0 to 10.2
Description
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Modeler 10.0 Standalone installed with Floating License Manager fails to launch with FlexNet error ‑15,570, even though the license file is applied successfully
- Floating License Server installed as part of Server Only installation is not working
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Client installs cannot access a license
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- Error message contents:
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Cannot connect to license server system. FlexNet Licensing error:-15,570 To open the application, you need to get an appropriate license via License Manager
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