Why Portable ? For those love portable software like me that run from usb stick or USB HDD and without any installation. Annoyed of not being able to use active sync on other pc with user restictions (like at Office/School)? Here is the solution.
Note: This is not a “proper” portable version, it leaves traces on host computer. If you want to delete traces browse to Documents and Settings/App Data/Thinstall. Otherwise This works with no installation on guest accounts. To stop application, as activesync doesnt have an exit button, you will need to use task manager to end process wcescomm.exe
Or simply log off.