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The Documentation has moved to dotnet/ResXResourceManager/Documentation

The VSIX installer sometimes fails to remove the old version of an extension during update; if the same extension is installed twice, VS disables it. Solution: use https://github.com/remcoros/DuplicateExtensionFinder to remove duplicates.

This may have several root causes

1. When you see the message Error: 'Provide value on 'System.Windows.StaticResourceExtension' threw an exception.'

• Multiple versions of some assemblies are used by different extensions. This is a WPF bug that was fixed in .Net 4.7.2 (see https://github.com/Microsoft/dotnet/blob/master/releases/net472/dotnet472-changes.md#wpf). To get rid of this, install .Net 4.7.2 and set HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\.NETFramework\AppContext\Switch.System.Windows.Baml2006.AppendLocalAssemblyVersionForSourceUri="true". (https://raw.githubusercontent.com/tom-englert/WpfResourceIssue/master/ActivateNet472WpfFix.reg)

2. Some assemblies (usually System.Windows.Interactivity) are loaded twice from different locations. Check the output window to see what locations the assembly is loaded from.

• If it is loaded from the folder of another extension, disable that extension.
• If it is loaded from C:/Program Files (x86)/Microsoft Visual Studio/2017/<edition>/Common7/IDE/PrivateAssemblies, you can delete it from there.
• If it is loaded from the GAC, use gacutil.exe to remove it from there.