The next Strato update will be release in the next weeks. This will require an update of the Windows component .NET Framework 4.5.1. The installation of this update can take several minutes. To make the Strato update faster and smoother we recommend you to install this update before the new Strato version is released.

If you have a few minutes you can run the installation from the following link:

http://www.microsoft.com/en-us/download/details.aspx?id=40779.