diff --git a/src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/appsettings.json b/src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/appsettings.json
index 042a531db4..0f893b1b48 100644
--- a/src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/appsettings.json
+++ b/src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/appsettings.json
@@ -36,5 +36,5 @@
       "Default": "Warning"
     }
   },
-  "AllowedHosts": [ "*" ]
+  "AllowedHosts": "*"
 }
diff --git a/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/appsettings.json b/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/appsettings.json
index 042a531db4..0f893b1b48 100644
--- a/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/appsettings.json
+++ b/src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/appsettings.json
@@ -36,5 +36,5 @@
       "Default": "Warning"
     }
   },
-  "AllowedHosts": [ "*" ]
+  "AllowedHosts": "*"
 }
diff --git a/src/Microsoft.DotNet.Web.ProjectTemplates/content/WebApi-CSharp/appsettings.json b/src/Microsoft.DotNet.Web.ProjectTemplates/content/WebApi-CSharp/appsettings.json
index b5aba22191..79300faae7 100644
--- a/src/Microsoft.DotNet.Web.ProjectTemplates/content/WebApi-CSharp/appsettings.json
+++ b/src/Microsoft.DotNet.Web.ProjectTemplates/content/WebApi-CSharp/appsettings.json
@@ -23,5 +23,5 @@
       "Default": "Warning"
     }
   },
-  "AllowedHosts": [ "*" ]
+  "AllowedHosts": "*"
 }
diff --git a/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/Angular-CSharp/appsettings.json b/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/Angular-CSharp/appsettings.json
index a895a76823..def9159a7d 100644
--- a/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/Angular-CSharp/appsettings.json
+++ b/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/Angular-CSharp/appsettings.json
@@ -4,5 +4,5 @@
       "Default": "Warning"
     }
   },
-  "AllowedHosts": [ "*" ]
+  "AllowedHosts": "*"
 }
diff --git a/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/React-CSharp/appsettings.json b/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/React-CSharp/appsettings.json
index a895a76823..def9159a7d 100644
--- a/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/React-CSharp/appsettings.json
+++ b/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/React-CSharp/appsettings.json
@@ -4,5 +4,5 @@
       "Default": "Warning"
     }
   },
-  "AllowedHosts": [ "*" ]
+  "AllowedHosts": "*"
 }
diff --git a/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/appsettings.json b/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/appsettings.json
index a895a76823..def9159a7d 100644
--- a/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/appsettings.json
+++ b/src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/appsettings.json
@@ -4,5 +4,5 @@
       "Default": "Warning"
     }
   },
-  "AllowedHosts": [ "*" ]
+  "AllowedHosts": "*"
 }