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Temporary workaround for AssemblyKeyName and Visual Studio 15.6

Visual Studio 2017 version 15.6 currently has a problem if a project signs an assembly with the AssemblyKeyNameAttribute:

One suggested workaround is to add this line in the project file:

If you have many projects and don't want to include this in every project file, you can create a system-wide configuration for all projects. Create the file %LOCALAPPDATA%\Microsoft\MSBuild\15.0\Imports\Microsoft.Common.props\ImportAfter\Sign.props (the file name can be different, but it must be at that location) with this content:

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="14.0" xmlns="">

The workaround will be included in every build on that machine (for the current user account). Since I don't work on .NET Core projects, I don't know whether this breaks signed .NET Core builds.