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CodeCollab GUI Error

Occasional Contributor

CodeCollab GUI Error

java.lang.NoClassDefFoundError: javax/xml/ws/http/HTTPException
at com.smartbear.ccollab.GuiMain.getMainCommand(
at com.smartbear.ccollab.GuiMain.main(
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(
at java.base/java.lang.reflect.Method.invoke(
at com.exe4j.runtime.LauncherEngine.launch(
at com.exe4j.runtime.WinLauncher.main(
at com.install4j.runtime.launcher.WinLauncher.main(
Caused by: java.lang.ClassNotFoundException:
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(
at java.base/java.lang.ClassLoader.loadClass(
... 9 more


MY DeskTOP OS : Win10

MY JAVA version : 1.8


In what cases do you get an error like the one above?

Tell me the solution.

SmartBear Alumni (Retired)

Hello @BooHyunJang,


This error may indicate corrupted instances of both Collaborator client or Java. It also can be caused by an unsupported Java vendor. Try to follow the steps below:

1. Uninstall the Collaborator client.

2. Launch the command prompt as administrator.

3. Navigate to the location of the Collaborator client installer and run it from the command prompt as below:

the_name_of_the_executable_file -manual


When the client installer is executed with the -manual option, it will ask you to provide the path to the Java location. If you see any exceptions, post them here. 

4. Check if the issue exists after re-installing the client. 


If the issue still occurs, try to uninstall Java completely, install Oracle Java 1.8, and follow the steps above one more time. 

Oleg Beriashvili
Technical Support Engineer
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