QtCreator no longer starting, "not able to get the TCP port for license service"

jschultz

As of this morning, I can no longer use my commercially-licensed QtCreator. The Qt Maintenance tool shows that there are no updates available, and it has no problems with my license. But when trying to start QtCreator, I get this message:

image (2).png

The Cancel button then proceeds to close QtCreator, rendering it unusable. QtCreator 14 has been working fine for the last few days, and I have not made any changes to QtCreator itself or my system since I last started it successfully.

What's going on?

JonB

@jschultz If you are using "commercially-licensed QtCreator" then you should ask TQtC about this.

jschultz

I'm not sure what TQtC stands for. Do you mean I should open a support request through the customer portal?

JonB

@jschultz
"TQtC" is "The Qt Company", from whom you have bought your commercial license which is giving you a problem. This is a user forum (users of Qt just like you, except mostly the Open Source version), commercial issues need addressing to the commercial company. I wouldn't know whether they have a "customer portal" or however you do it, but if you have support that is what you should use.

cristian-adam

https://bugreports.qt.io/browse/QLS-1141 is the bugreport tracking this.

You can have two workarounds:

Set the environment variable QTC_USE_NAMEDLICENSE=1 before starting Qt Creator
Delete the libLicenseChecker.so file

jschultz

Thanks Cristian, setting QTC_USE_NAMEDLICENSE=1 fixes the issue for now.