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What

Upgrades WiX Toolset from version 3.11.2 to 3.14.1 to fix build failures in the PackWindowsInstallers target.

Why

The build was failing with:

error MSB4062: The "ResolveWixReferences" task could not be loaded from the assembly wixtasks.dll. 
Could not load file or assembly 'Microsoft.Build.Utilities, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.

WiX 3.11.2 is incompatible with modern versions of MSBuild (16.11.6+). It tries to load an ancient version of Microsoft.Build.Utilities (v2.0.0.0) that doesn't exist in modern MSBuild installations.

WiX 3.14.1 includes proper support for MSBuild 15+ and correctly binds to newer versions of Microsoft.Build.Utilities.

Changes

  • Updated WiX package version from 3.11.2 to 3.14.1 in build/_build.csproj

Fixes build failure where WiX 3.11.2 was incompatible with MSBuild 16.11.6+
WiX 3.11.2 tried to load Microsoft.Build.Utilities v2.0.0.0 which doesn't exist in modern MSBuild
WiX 3.14.1 has proper support for MSBuild 15+ and newer Microsoft.Build.Utilities versions
@LukeButters LukeButters requested a review from a team as a code owner January 6, 2026 03:18
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:shipit:

@LukeButters LukeButters enabled auto-merge (squash) January 6, 2026 03:28
@LukeButters LukeButters merged commit 61544a8 into main Jan 6, 2026
51 checks passed
@LukeButters LukeButters deleted the luke/upgrade-wix-toolset-to-3.14.1 branch January 6, 2026 04:12
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2 participants