ContributionsMost RecentMost LikesSolutionsRe: SoapUI 5.4 Install Attempt Fails Every Time on a Windows 10 workstation Resolved: Right-click on the SoapUI installer .exe in Windows 10 and choose the option "Troubleshoot Compatibility". Allow the wizard to detect issues, then choose "Windows 7 Compatibility Mode". SoapUI 5.4 Install Attempt Fails Every Time on a Windows 10 workstation All, when attempting to install SoapUI 5.4 on a Windows 10 (ver. 1607) workstation, it is giving the same error below every time. Any ideas? Not a lot on Google about it except for some very vague suggestions. An error occurred: com.sun.org.apache.xml.internal.serializer.utils.WrappedRuntimeException: Could not load the propery file 'output_xml.properties' for output method 'xml' (check CLASSPATH) com.sun.org.apache.xml.internal.serializer.utils.WrappedRuntimeException: Could not load the propery file 'output_xml.properties' for output method 'xml' (check CLASSPATH) at com.sun.org.apache.xml.internal.serializer.OutputPropertiesFactory.getDefaultMethodProperties(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.setDefaults(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.createOutputProperties(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.<init>(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.<init>(Unknown Source) at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl.newTransformer(Unknown Source) at com.install4j.runtime.installer.helper.XmlHelper.getString(Unknown Source) at com.install4j.runtime.installer.config.AbstractBeanConfig.instantiateBean(Unknown Source) at com.install4j.runtime.installer.config.ApplicationBeanConfig.getOrInstantiateApplication(Unknown Source) at com.install4j.runtime.installer.config.InstallerConfig.getApplicationById(Unknown Source) at com.install4j.runtime.installer.config.InstallerConfig.setCurrentApplicationId(Unknown Source) at com.install4j.runtime.installer.Installer.runInProcess(Unknown Source) at com.install4j.runtime.installer.Installer.main(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.exe4j.runtime.LauncherEngine.launch(Unknown Source) at com.exe4j.runtime.WinLauncher.main(Unknown Source) at com.install4j.runtime.launcher.WinLauncher.main(Unknown Source) Solved