Article - CS27950
Error “FLEXnet licensing error: "(-61), Cannot read license file data from license server system" while launching applications configured with PTC FLEXnet Admin License Server
Modified: 02-Jul-2025
Applies To
- Mathcad 14.0 M035 to 15.0
- Creo Parametric 1.0 to 12.4
- Pro/ENGINEER and Creo Elements/Pro Wildfire to Wildfire 5.0
- Mathcad Prime 1.0 to 11.0
- PTC Arbortext Editor 6.0 to 8.0
- PTC Arbortext Styler 6.0 to 8.0
- PTC Arbortext Architect 6.0 to 8.0
- Arbortext IsoDraw CADprocess 7.0 to 7.3
- Creo Simulate 1.0 to 7.0
- Pro/MECHANICA and Creo Elements/Pro Mechanica Wildfire to Wildfire 5.0
- PTC FLEXnet Admin License Server
- License expired
Description
- Error FLEXnet licensing error: (-61), Cannot read license file data from license server system when launching applications configured with PTC FLEXnet Admin License Server
- Error No such feature or vendor does not exist: ptc_d appeared on launching FLEXnet Admin license server dashboard.
- Error -61 unable to connect to the server
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