VSTO Runtime Update to Address Slow Shutdown and “Unknown Publisher” for SHA256 Certificates

We are pleased to announce a new version of the VSTO Runtime (10.0.50325) that addresses two important issues reported to us by customers.

For VSTO add-ins using WPF controls, customers using touch-enabled devices experienced a 15-20 second lag when closing Office applications. This issue was first reported via a Connect bug, which helped provide the context for investigating and fixing this bug.

Additionally, for developers using SHA256 code-signing certificates, the installation Trust Prompt would erroneously display “Unknown Publisher” even when the publisher was fully trusted.  The latest update ensures that the publisher’s name and verification status are properly displayed.

As always, the latest version of the VSTO Runtime is available for download at http://go.microsoft.com/fwlink/?LinkId=140384.  The update will also be distributed as part of Windows Update in the future. If you would like to ensure that your users have the latest version installed, please follow the instructions for creating/modifying a bootstrapper package from our previous blog post, substituting the latest version number (10.0.50325) into the following properties:

<BypassIf Property=”VSTORuntimeVersionInstalled” Compare=”VersionGreaterThanOrEqualTo” Value=”10.0.50325“/>

<BypassIf Property=”VSTORuntimeVersionOfficeInstalled” Compare=”VersionGreaterThanOrEqualTo” Value=”10.0.50325“/>

We would like to thank our customers who brought these issues to our attention.

~ Thomas Bombach | Software Development Engineer, Visual Studio