diff --git a/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/SchemaComplianceFixture.cs b/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/SchemaComplianceFixture.cs
index 2897431..65d8604 100644
--- a/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/SchemaComplianceFixture.cs
+++ b/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/SchemaComplianceFixture.cs
@@ -9,11 +9,11 @@ namespace ZB.MOM.WW.OtOpcUa.Configuration.Tests;
 ///     Spins up a dedicated test database, applies the EF migrations against it, and exposes a
 ///     <see cref="SqlConnection"/> factory. Disposed at collection teardown (drops the DB).
 ///     Gated by the <c>OTOPCUA_CONFIG_TEST_SERVER</c> env var so CI runs can opt in explicitly;
-///     local runs default to the dev container on <c>localhost:14330</c>.
+///     local runs default to the shared Docker host's SQL Server on <c>10.100.0.35:14330</c>.
 /// </summary>
 public sealed class SchemaComplianceFixture : IDisposable
 {
-    private const string DefaultServer = "localhost,14330";
+    private const string DefaultServer = "10.100.0.35,14330";
     private const string DefaultSaPassword = "OtOpcUaDev_2026!";
 
     public string DatabaseName { get; }
diff --git a/tests/Server/ZB.MOM.WW.OtOpcUa.Admin.Tests/AdminServicesIntegrationTests.cs b/tests/Server/ZB.MOM.WW.OtOpcUa.Admin.Tests/AdminServicesIntegrationTests.cs
index 50340c9..b67f48d 100644
--- a/tests/Server/ZB.MOM.WW.OtOpcUa.Admin.Tests/AdminServicesIntegrationTests.cs
+++ b/tests/Server/ZB.MOM.WW.OtOpcUa.Admin.Tests/AdminServicesIntegrationTests.cs
@@ -18,7 +18,7 @@ namespace ZB.MOM.WW.OtOpcUa.Admin.Tests;
 [Trait("Category", "Integration")]
 public sealed class AdminServicesIntegrationTests : IDisposable
 {
-    private const string DefaultServer = "localhost,14330";
+    private const string DefaultServer = "10.100.0.35,14330";
     private const string DefaultSaPassword = "OtOpcUaDev_2026!";
 
     private readonly string _databaseName = $"OtOpcUaAdminTest_{Guid.NewGuid():N}";
diff --git a/tests/Server/ZB.MOM.WW.OtOpcUa.Admin.Tests/FleetStatusPollerTests.cs b/tests/Server/ZB.MOM.WW.OtOpcUa.Admin.Tests/FleetStatusPollerTests.cs
index 1a14b2b..a85d5fb 100644
--- a/tests/Server/ZB.MOM.WW.OtOpcUa.Admin.Tests/FleetStatusPollerTests.cs
+++ b/tests/Server/ZB.MOM.WW.OtOpcUa.Admin.Tests/FleetStatusPollerTests.cs
@@ -15,7 +15,7 @@ namespace ZB.MOM.WW.OtOpcUa.Admin.Tests;
 [Trait("Category", "Integration")]
 public sealed class FleetStatusPollerTests : IDisposable
 {
-    private const string DefaultServer = "localhost,14330";
+    private const string DefaultServer = "10.100.0.35,14330";
     private const string DefaultSaPassword = "OtOpcUaDev_2026!";
 
     private readonly string _databaseName = $"OtOpcUaPollerTest_{Guid.NewGuid():N}";
diff --git a/tests/Server/ZB.MOM.WW.OtOpcUa.Server.Tests/HostStatusPublisherTests.cs b/tests/Server/ZB.MOM.WW.OtOpcUa.Server.Tests/HostStatusPublisherTests.cs
index b7f4948..da2e0e6 100644
--- a/tests/Server/ZB.MOM.WW.OtOpcUa.Server.Tests/HostStatusPublisherTests.cs
+++ b/tests/Server/ZB.MOM.WW.OtOpcUa.Server.Tests/HostStatusPublisherTests.cs
@@ -14,7 +14,7 @@ namespace ZB.MOM.WW.OtOpcUa.Server.Tests;
 [Trait("Category", "Integration")]
 public sealed class HostStatusPublisherTests : IDisposable
 {
-    private const string DefaultServer = "localhost,14330";
+    private const string DefaultServer = "10.100.0.35,14330";
     private const string DefaultSaPassword = "OtOpcUaDev_2026!";
 
     private readonly string _databaseName = $"OtOpcUaPublisher_{Guid.NewGuid():N}";