From 6c32eaad68975ebf5a2fc4980372ec2eaf401f36 Mon Sep 17 00:00:00 2001
From: "mr. m" <91018726+mr-cheffy@users.noreply.github.com>
Date: Mon, 14 Sep 2026 02:33:15 +0200
Subject: [PATCH] gh-15384: Fix windows builds for Firefox `156.0` (gh-15399)

---
 build/windows/sign.ps1    | 4 ++--
 configs/windows/mozconfig | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/build/windows/sign.ps1 b/build/windows/sign.ps1
index 4e0f345da..c301e770d 100644
--- a/build/windows/sign.ps1
+++ b/build/windows/sign.ps1
@@ -147,9 +147,9 @@ function SignAndPackage($name) {
     $env:ZEN_SETUP_EXE_PATH="$PWD\windsign-temp\windows-x64-obj-$name\browser\installer\windows\instgen\setup.exe"
 
     if ($name -eq "arm64") {
-        $env:WIN32_REDIST_DIR="$PWD\win-cross\vs2026\VC\Redist\MSVC\14.50.35710\arm64\Microsoft.VC145.CRT"
+        $env:WIN32_REDIST_DIR="$PWD\win-cross\vs2026\VC\Redist\MSVC\14.51.36231\arm64\Microsoft.VC145.CRT"
     } else {
-        $env:WIN32_REDIST_DIR="$PWD\win-cross\vs2026\VC\Redist\MSVC\14.50.35710\x64\Microsoft.VC145.CRT"
+        $env:WIN32_REDIST_DIR="$PWD\win-cross\vs2026\VC\Redist\MSVC\14.51.36231\x64\Microsoft.VC145.CRT"
     }
 
     $env:MAR="..\\build\\windows\\mar.exe"
diff --git a/configs/windows/mozconfig b/configs/windows/mozconfig
index ae38f3791..356d8d239 100644
--- a/configs/windows/mozconfig
+++ b/configs/windows/mozconfig
@@ -15,9 +15,9 @@ if test "$ZEN_CROSS_COMPILING"; then
   CROSS_COMPILE=1
 
   if test "$SURFER_COMPAT" = "aarch64"; then
-    export WIN32_REDIST_DIR="$WINSYSROOT/VC/Redist/MSVC/14.50.35710/arm64/Microsoft.VC145.CRT"
+    export WIN32_REDIST_DIR="$WINSYSROOT/VC/Redist/MSVC/14.51.36231/arm64/Microsoft.VC145.CRT"
   else
-    export WIN32_REDIST_DIR="$WINSYSROOT/VC/Redist/MSVC/14.50.35710/x64/Microsoft.VC145.CRT"
+    export WIN32_REDIST_DIR="$WINSYSROOT/VC/Redist/MSVC/14.51.36231/x64/Microsoft.VC145.CRT"
   fi
 fi