diff --git a/SmartCmdArgs/SmartCmdArgs.Shared/Services/ProjectConfigService.cs b/SmartCmdArgs/SmartCmdArgs.Shared/Services/ProjectConfigService.cs
index 23be9d4..500b3c4 100644
--- a/SmartCmdArgs/SmartCmdArgs.Shared/Services/ProjectConfigService.cs
+++ b/SmartCmdArgs/SmartCmdArgs.Shared/Services/ProjectConfigService.cs
@@ -349,13 +349,57 @@ private class CustomDebuggerRule
             return list;
         }
 
+        /// <summary>
+        /// Returns the VCConfiguration the debug settings should be written to.
+        /// <para>
+        /// <c>VCProject.ActiveConfiguration</c> is not reliable, it can return a configuration which is
+        /// not the one currently selected (observed in VS2026). The arguments themselves are selected
+        /// based on <c>Project.ConfigurationManager.ActiveConfiguration</c> (see
+        /// <see cref="ItemAggregationService"/>), so they have to be written to that very same
+        /// configuration. Otherwise they end up in a configuration which is not the one being debugged.
+        /// </para>
+        /// </summary>
+        private static dynamic GetActiveVCConfiguration(EnvDTE.Project project, dynamic vcPrj)
+        {
+            ThreadHelper.ThrowIfNotOnUIThread();
+
+            try
+            {
+                var dteCfg = project?.ConfigurationManager?.ActiveConfiguration;
+                if (dteCfg != null)
+                {
+                    // VCConfiguration.Name has the form "Configuration|Platform"
+                    var wantedName = $"{dteCfg.ConfigurationName}|{dteCfg.PlatformName}";
+
+                    dynamic configs = vcPrj?.Configurations; // is IVCCollection
+                    if (configs != null)
+                    {
+                        for (int index = 1; index <= configs.Count; index++)
+                        {
+                            dynamic cfg = configs.Item(index); // is VCConfiguration
+                            if (cfg != null && string.Equals((string)cfg.Name, wantedName, StringComparison.OrdinalIgnoreCase))
+                                return cfg;
+                        }
+                    }
+
+                    Logger.Warn($"GetActiveVCConfiguration: no VCConfiguration named '{wantedName}' found, falling back to VCProject.ActiveConfiguration");
+                }
+            }
+            catch (Exception ex)
+            {
+                Logger.Error("GetActiveVCConfiguration: failed to resolve the active configuration via ConfigurationManager", ex);
+            }
+
+            return vcPrj?.ActiveConfiguration;
+        }
+
         private static void SetVCProjEngineConfig(EnvDTE.Project project, string arguments, IDictionary<string, string> envVars, string workDir, string launchApp)
         {
             ThreadHelper.ThrowIfNotOnUIThread();
 
             // Use late binding to support VS2015 and VS2017
             dynamic vcPrj = (dynamic)project.Object; // is VCProject
-            dynamic vcCfg = vcPrj?.ActiveConfiguration; // is VCConfiguration
+            dynamic vcCfg = GetActiveVCConfiguration(project, vcPrj); // is VCConfiguration
 
             if (vcCfg == null)
             {
diff --git a/SmartCmdArgs/SmartCmdArgs17/source.extension.vsixmanifest b/SmartCmdArgs/SmartCmdArgs17/source.extension.vsixmanifest
index b228ade..66f278a 100644
--- a/SmartCmdArgs/SmartCmdArgs17/source.extension.vsixmanifest
+++ b/SmartCmdArgs/SmartCmdArgs17/source.extension.vsixmanifest
@@ -11,10 +11,10 @@
         <Tags>Commandline Command Line Arguments cmd project</Tags>
     </Metadata>
     <Installation>
-        <InstallationTarget Id="Microsoft.VisualStudio.Community" Version="[17.0, 18.0)">
+        <InstallationTarget Id="Microsoft.VisualStudio.Community" Version="[17.0, 19.0)">
             <ProductArchitecture>amd64</ProductArchitecture>
         </InstallationTarget>
-        <InstallationTarget Id="Microsoft.VisualStudio.Community" Version="[17.0,18.0)">
+        <InstallationTarget Id="Microsoft.VisualStudio.Community" Version="[17.0, 19.0)">
             <ProductArchitecture>arm64</ProductArchitecture>
         </InstallationTarget>
     </Installation>
@@ -22,7 +22,7 @@
         <Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.5,)" />
     </Dependencies>
     <Prerequisites>
-        <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[17.0,18.0)" DisplayName="Visual Studio core editor" />
+        <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[17.0, 19.0)" DisplayName="Visual Studio core editor" />
     </Prerequisites>
     <Assets>
         <Asset Type="Microsoft.VisualStudio.VsPackage" d:Source="Project" d:ProjectName="%CurrentProject%" Path="|%CurrentProject%;PkgdefProjectOutputGroup|" />