Cannot run Maven using `mvn -D` argument within Microsoft Powershell, but works in Command Prompt

When you run into problems with PowerShell’s interpretation of arguments to be passed to a console EXE, try using the echoargs.exe utility that comes with the PowerShell Community Extensions. With this tool you can see how PowerShell supplies the arguments to the EXE e.g.:

PS> echoargs mvn clean install -Dmaven.test.skip=true
Arg 0 is <mvn>
Arg 1 is <clean>
Arg 2 is <install>
Arg 3 is <-Dmaven>
Arg 4 is <.test.skip=true>

PS> echoargs mvn clean install '-Dmaven.test.skip=true'
Arg 0 is <mvn>
Arg 1 is <clean>
Arg 2 is <install>
Arg 3 is <-Dmaven.test.skip=true>

Short answer – use quoting '-Dmaven.test.skip=true'

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