diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index a471448250..3479460f61 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -729,7 +729,12 @@ jobs:
 
       - name: 'vcpkg build'
         timeout-minutes: 35
-        run: vcpkg x-set-installed ${{ matrix.install }} '--triplet=${{ matrix.arch }}-${{ matrix.plat }}'
+        run: |
+          # Temporary workaround pending: https://github.com/microsoft/vcpkg-tool/pull/1501
+          export SystemDrive="$SYSTEMDRIVE"
+          export SystemRoot="$SYSTEMROOT"
+          export windir="$WINDIR"
+          vcpkg x-set-installed ${{ matrix.install }} '--triplet=${{ matrix.arch }}-${{ matrix.plat }}'
 
       - name: 'cmake configure'
         timeout-minutes: 5