https://support.microsoft.com/en-us/hel ... wpf-apps-t
Click the link to the Microsoft website for a detailed description.Workaround 1 - Uninstall the January 2018 Update
To keep .NET 4.7.1 installed and maintain protection against vulnerabilities that are addressed by the January security updates, uninstall the January .NET Framework Security and Quality Rollup (KB4055002), and then install the January .NET Framework Security-Only Update (KB4054183).
Workaround 2 - Uninstall the .NET Framework 4.7.1, Install .NET Framework 4.7