Update to Version 1.3.56 crashed, deinstall or reinstall not possible

At the End of the Update MissionPlanner crashed with the Message (no response or no feedback)
It was not possible to deinstall nor reinstall MP.
In the Folder C:\Program (x86)\MissionPlanner I found 60 Gigabyte of Files.
I deleted this manually (normally not good) and of course there are some infos in the Registry
which makes trouble to install a new MP.
Advanced Installation was possible( .ZIP).

How to Install the .msi Version again?