diff --git a/tools/devops/automation/templates/windows/build.yml b/tools/devops/automation/templates/windows/build.yml
index 1752872cd05..7514fbe3152 100644
--- a/tools/devops/automation/templates/windows/build.yml
+++ b/tools/devops/automation/templates/windows/build.yml
@@ -234,6 +234,10 @@ steps:
 - pwsh: |
     $Env:PATH = "$(Build.SourcesDirectory)\xamarin-macios\tests\dotnet\Windows\bin\dotnet;$env:PATH"
     $Env:DOTNET = "$(Build.SourcesDirectory)\xamarin-macios\tests\dotnet\Windows\bin\dotnet\dotnet.exe"
+    # Unset variables to connect to a remote Mac, since that's not what these tests are supposed to be doing.
+    $Env:MAC_AGENT_IP = ""
+    $Env:MAC_AGENT_USER = ""
+    $Env:XMA_PASSWORD = ""
     & $(Build.SourcesDirectory)\xamarin-macios\tests\dotnet\Windows\bin\dotnet\dotnet.exe `
         test `
         "$(Build.SourcesDirectory)/xamarin-macios/tests/dotnet/UnitTests/DotNetUnitTests.csproj" `