- Right click on the folder on the task bar, then press again right click on Windows-Explorer and select properties.
- In the new window add to the Path behind .exe this: " /e," (without quotation marks and do not forget the space before the e).
- Apply and Ok.
Source: http://praxistipps.chip.de/windows-explorer-arbeitsplatz-statt-bibliotheken-oeffnen_13655