Enable UNO listener on Windows

wordpad "C:\Programme\OpenOffice.org 3\Basis\share\registry\data\org\openoffice\Setup.xcu"
 
search for <node oor:name="Office"> (by default line 3) and add
<prop oor:name="ooSetupConnectionURL" oor:type="xs:string">
   <value>socket,host=localhost,port=8100;urp;</value>
</prop>