• Missing translation in the top level menus issue for all languages.
• Visual Studio Installer Infinite Update Loop (starting on 1/23 or later).
• We have fixed a crash that occurs while trying to rename a tag within a razor block in a .cshtml file. 

Issues Fixed in 15.9.1

These are the issues addressed in 15.9.1:

• Fixed a bug where Visual Studio would fail to build projects using the Microsoft Xbox One XDK.

Details of What's New in 15.9.1

Universal Windows Platform Development SDK

The Windows 10 October 2018 Update SDK (build 17763) is now the default selected SDK for the Universal Windows Platform development workload.

These are the customer-reported issues addressed in 15.8.2:

• Publish single file context menu item missing.
• Git network operations not working: Cannot spawn git-askpass.exe.
• "Visual C++ Resource Editor Package" load failed.
• Preview Transform gives error.
• Cannot type close brace.
• Object reference not set to an instance of an object when deploying Service Fabric project after update 15.8.0.
• "The given path's format is not supported" installation error.
• Task ExpandPriContent failed. Illegal characters in path.
• "Could not create instance of type System.Collections.Genertic.Iset'1[Signer]" installer error.
• Service fabric deployment fails in 15.8.0.
• Cannot create app package for Windows store.
• Incorrect code generation for strongly-typed resources.
• Keyboard binding for Italian layout.
• IntelliSense broken #9999.
• When working on a Unity project and Unity rewrites multiple project files, the Visual Studio Tools for Unity will now automatically reload the solution.
• The customer will now get a dialog to close Office applications if they are blocking the Visual Studio install and causing a failure of 1303. 

These are the customer-reported issues addressed in 15.9.4:

• Visual Studio 15.9 duplicate loads open files on solution reload.
• All users can now connect to on-premise TFS servers through Team Explorer.
• Visual Studio 15.8.3 no longer expands metadata in ItemDefinitionGroup for project-defined items during GUI builds (worked in Visual Studio 15.8.2).
• Visual Studio has multiple tabs for the same file.
• System.ArgumentException: The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)).
• LNK4099 PDB not found.
• Asset Catalog empty.
• /analyze fails for C++ code using /ZW.
• C++ compiler code optimization bug.
• Xamarin.iOS can't select image asset for Image View.
• iOS projects referencing a shared project containing image assets in an asset catalog fail to load on windows.
• Image not populating on iOS splashscreen in VS 15.8.6.
• Possible bad codegen on union/bitfield assignment in VS2017 15.8.
• Fix C# UWP Store 1201 Submission Issue.
• Fix C# UWP package creation error APPX1101: Payload contains two or more files with the same destination path 'System.Runtime.CompilerServices.Unsafe.dll'.
• Error MT2002: Failed to resolve 'System.Runtime.CompilerServices.AsyncValueTaskMethodBuilder' reference from 'System.Threading.Tasks.Extensions...'" when building a Xamarin.iOS project.
• Redirecting to a relative url doesn't work when using AndroidClientHandler.
• Debug information for typedefs of unnamed enums compiled with the C compiler is now restored.
• The spectre-mitigated x86 version of delayimp.lib is now built with /Qspectre mitigations enabled.
• Changes were made to how Asset Catalogs in Xamarin.iOS projects are loaded in order to reduce solution load time.
• We have updated Xamarin.Forms templates to use the latest version.
• We have fixed an issue with ASP.NET Core Web Applications being debugged through Kestrel that would show the error message "Unable to configure HTTPS endpoint. No server certificate was specified...".
• Enabling the AppInsights site extension in App Service from Visual Studio now happens through the use of specific Application Settings.

Security Advisory Notices

• An elevation of privilege vulnerability exists when the Diagnostics Hub Standard Collector Service improperly handles certain file operations. 

Summary of Notable New Features in 15.9

• You can now import and export an installation configuration file that specifies which workloads and components should be installed with an instance of Visual Studio.
• We have improved the debugging experience for NuGet packages using the new symbol package format (.snupkg).
• Step back in debugger is now available in C++ for Enterprise customers.
• C++ IntelliSense now responds to changes in the remote environment for both CMake and MSBuild projects targeting Linux.
• We have made updates to UWP Desktop Bridge framework packages and added support for ARM64 C++ Native Desktop scenarios.
• We added support for the range-v3 library with the MSVC 15.9 compiler.
• We fixed several bugs in the F# compiler and F# tools.
• Language service support for new TypeScript features for semantic file renaming and project references.
• Improved Node.js development by updating Vue.js templates and adding support for unit testing using the Jest framework.
• We added SharePoint 2019 project templates, so you can migrate existing SharePoint 2013 and 2016 projects to SharePoint 2019.
• Visual Studio Tools for Xamarin now supports Xcode 10.
• We made improvements to the Xamarin.Android build performance.
• We have added and improved features for Universal Windows Platform developers, including ARM64 support, the latest preview SDK, better debugging of Desktop Bridge applications, and XAML Designer improvements.
• Substantial improvements were made to the experience of using authenticated package feeds.
• There is now support for lock file to enable repeatable restore for PackageReference based projects.
• We have added support for the new license format for NuGet packages.
• We have introduced NuGet client policies in Visual Studio which enables you to lock down environments such that only trusted packages can be installed.
• We made the use of .NET Core within Visual Studio more predictable.

Top Issues Fixed in 15.9

• No way to change "Find All References" background color.
• "Visual C++ Resource Editor Package" load failed.
• VS2017 v15.8 Build does not start if XAML files are not manually saved first.
• Installation failed - manifest signature verification failed.
• Update 15.8.6 breaks Installer Projects.
• Scrolling up with the arrow key causes Visual Studio to page up.
• After updating to 15.8.1, data tip does not show when debugging.
• System.InvalidProgramException: Common Language Runtime detected an invalid program..
• Solution Explorer does not remain pinned after closing Visual Studio.
• Navigation bar in editor has trouble handling long method names. 

These are the customer-reported issues addressed in 15.9.9:

• SSDT: We fixed a crash in the SSIS Foreach Loop container.
• A few .NET native for UWP customer issues were fixed in .NET native tools 2.2 (UWP 6.2.4).
• We have corrected dual signing of Visual C++ Redistributable installers.

Security Advisory Notices

• A remote code execution vulnerability exists when the Visual Studio C++ Redistributable Installer improperly validates input before loading dynamic link library (DLL) files.
• Unity Editor Remote Code Execution Vulnerability.
• .NET Core NuGet Tampering Vulnerability.