diff --git a/samples/CookieSample/project.json b/samples/CookieSample/project.json
index 22d51833b2..fa17dd9cf3 100644
--- a/samples/CookieSample/project.json
+++ b/samples/CookieSample/project.json
@@ -4,7 +4,8 @@
     "Microsoft.AspNetCore.DataProtection": "1.0.0-*",
     "Microsoft.AspNetCore.IISPlatformHandler": "1.0.0-*",
     "Microsoft.AspNetCore.Server.Kestrel": "1.0.0-*",
-    "Microsoft.Extensions.Logging.Console": "1.0.0-*"
+    "Microsoft.Extensions.Logging.Console": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "compilationOptions": {
     "emitEntryPoint": true
diff --git a/samples/CookieSessionSample/project.json b/samples/CookieSessionSample/project.json
index dd58262480..8de831b403 100644
--- a/samples/CookieSessionSample/project.json
+++ b/samples/CookieSessionSample/project.json
@@ -5,7 +5,8 @@
     "Microsoft.AspNetCore.IISPlatformHandler": "1.0.0-*",
     "Microsoft.AspNetCore.Server.Kestrel": "1.0.0-*",
     "Microsoft.Extensions.Caching.Memory": "1.0.0-*",
-    "Microsoft.Extensions.Logging.Console": "1.0.0-*"
+    "Microsoft.Extensions.Logging.Console": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "compilationOptions": {
     "emitEntryPoint": true
diff --git a/samples/JwtBearerSample/project.json b/samples/JwtBearerSample/project.json
index 9ba387d674..436a2203be 100644
--- a/samples/JwtBearerSample/project.json
+++ b/samples/JwtBearerSample/project.json
@@ -8,7 +8,8 @@
     "Microsoft.AspNetCore.IISPlatformHandler": "1.0.0-*",
     "Microsoft.AspNetCore.Server.Kestrel": "1.0.0-*",
     "Microsoft.AspNetCore.StaticFiles": "1.0.0-*",
-    "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0-*"
+    "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "commands": {
     "web": "JwtBearerSample"
diff --git a/samples/OpenIdConnectSample/project.json b/samples/OpenIdConnectSample/project.json
index b0befb5403..e5bec9e8c6 100644
--- a/samples/OpenIdConnectSample/project.json
+++ b/samples/OpenIdConnectSample/project.json
@@ -5,7 +5,8 @@
     "Microsoft.AspNetCore.IISPlatformHandler": "1.0.0-*",
     "Microsoft.AspNetCore.Server.Kestrel": "1.0.0-*",
     "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0-*",
-    "Microsoft.Extensions.Logging.Console": "1.0.0-*"
+    "Microsoft.Extensions.Logging.Console": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "frameworks": {
     "dnx451": {},
diff --git a/samples/SocialSample/project.json b/samples/SocialSample/project.json
index a8eb114c99..00570902f6 100644
--- a/samples/SocialSample/project.json
+++ b/samples/SocialSample/project.json
@@ -9,7 +9,8 @@
     "Microsoft.AspNetCore.IISPlatformHandler": "1.0.0-*",
     "Microsoft.AspNetCore.Server.Kestrel": "1.0.0-*",
     "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0-*",
-    "Microsoft.Extensions.Logging.Console": "1.0.0-*"
+    "Microsoft.Extensions.Logging.Console": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*"
   },
   "compilationOptions": {
     "emitEntryPoint": true
diff --git a/src/Microsoft.AspNetCore.Authentication.Facebook/project.json b/src/Microsoft.AspNetCore.Authentication.Facebook/project.json
index 479a08011a..5dbf6f6cfb 100644
--- a/src/Microsoft.AspNetCore.Authentication.Facebook/project.json
+++ b/src/Microsoft.AspNetCore.Authentication.Facebook/project.json
@@ -14,6 +14,8 @@
   },
   "frameworks": {
     "net451": {},
-    "dotnet5.4": {}
+    "dotnet5.4": {
+      "imports": "portable-net451+win8"
+    }
   }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Authentication.Google/project.json b/src/Microsoft.AspNetCore.Authentication.Google/project.json
index 10862c3180..929424cc14 100644
--- a/src/Microsoft.AspNetCore.Authentication.Google/project.json
+++ b/src/Microsoft.AspNetCore.Authentication.Google/project.json
@@ -14,6 +14,8 @@
   },
   "frameworks": {
     "net451": {},
-    "dotnet5.4": {}
+    "dotnet5.4": {
+      "imports": "portable-net451+win8"
+    }
   }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Authentication.JwtBearer/project.json b/src/Microsoft.AspNetCore.Authentication.JwtBearer/project.json
index 0ff2727364..f6e200b7c2 100644
--- a/src/Microsoft.AspNetCore.Authentication.JwtBearer/project.json
+++ b/src/Microsoft.AspNetCore.Authentication.JwtBearer/project.json
@@ -15,6 +15,8 @@
   },
   "frameworks": {
     "net451": { },
-    "dotnet54": { }
+    "dotnet5.4": {
+      "imports": "portable-net451+win8"
+    }
   }
 }
diff --git a/src/Microsoft.AspNetCore.Authentication.MicrosoftAccount/project.json b/src/Microsoft.AspNetCore.Authentication.MicrosoftAccount/project.json
index db03dbd5c7..c415b2a63f 100644
--- a/src/Microsoft.AspNetCore.Authentication.MicrosoftAccount/project.json
+++ b/src/Microsoft.AspNetCore.Authentication.MicrosoftAccount/project.json
@@ -14,6 +14,8 @@
   },
   "frameworks": {
     "net451": {},
-    "dotnet5.4": {}
+    "dotnet5.4": {
+      "imports": "portable-net451+win8"
+    }
   }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Authentication.OAuth/project.json b/src/Microsoft.AspNetCore.Authentication.OAuth/project.json
index 5049862100..c5128412c4 100644
--- a/src/Microsoft.AspNetCore.Authentication.OAuth/project.json
+++ b/src/Microsoft.AspNetCore.Authentication.OAuth/project.json
@@ -22,7 +22,8 @@
     "dotnet5.4": {
       "dependencies": {
         "System.Net.Http": "4.0.1-*"
-      }
+      },
+      "imports": "portable-net451+win8"
     }
   }
 }
diff --git a/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/project.json b/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/project.json
index 40825201c6..90487a898b 100644
--- a/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/project.json
+++ b/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/project.json
@@ -15,6 +15,8 @@
   },
   "frameworks": {
     "net451": {},
-    "dotnet54": {}
+    "dotnet5.4": {
+      "imports": "portable-net451+win8"
+    }
   }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Authentication/project.json b/src/Microsoft.AspNetCore.Authentication/project.json
index c7a58a242c..d34a6697bc 100644
--- a/src/Microsoft.AspNetCore.Authentication/project.json
+++ b/src/Microsoft.AspNetCore.Authentication/project.json
@@ -30,7 +30,8 @@
     "dotnet5.4": {
       "dependencies": {
         "System.Net.Http": "4.0.1-*"
-      }
+      },
+      "imports": "portable-net451"
     }
   }
 }
diff --git a/test/Microsoft.AspNetCore.Authentication.Test/project.json b/test/Microsoft.AspNetCore.Authentication.Test/project.json
index dcaa71f520..2048801a64 100644
--- a/test/Microsoft.AspNetCore.Authentication.Test/project.json
+++ b/test/Microsoft.AspNetCore.Authentication.Test/project.json
@@ -12,6 +12,7 @@
     "Microsoft.AspNetCore.Authentication.Twitter": "1.0.0-*",
     "Microsoft.AspNetCore.TestHost": "1.0.0-*",
     "Microsoft.AspNetCore.Testing": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit": "2.1.0"
   },
   "frameworks": {
@@ -26,8 +27,10 @@
     },
     "dnxcore50": {
       "dependencies": {
+        "System.Runtime": "4.0.21-*",
         "xunit.runner.aspnet": "2.0.0-aspnet-*"
-      }
+      },
+      "imports": "portable-net451+win8"
     }
   },
   "testRunner": "xunit",
diff --git a/test/Microsoft.AspNetCore.Authorization.Test/project.json b/test/Microsoft.AspNetCore.Authorization.Test/project.json
index a2b212276f..d5d5544626 100644
--- a/test/Microsoft.AspNetCore.Authorization.Test/project.json
+++ b/test/Microsoft.AspNetCore.Authorization.Test/project.json
@@ -7,6 +7,7 @@
     "Microsoft.AspNetCore.Testing": "1.0.0-*",
     "Microsoft.Extensions.DependencyInjection": "1.0.0-*",
     "Microsoft.Extensions.Logging": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit": "2.1.0"
   },
   "frameworks": {
@@ -19,10 +20,11 @@
         "xunit.runner.console": "2.1.0"
       }
     },
-    "dnxcore50": { 
+    "dnxcore50": {
       "dependencies": {
         "xunit.runner.aspnet": "2.0.0-aspnet-*"
-      }
+      },
+      "imports": "portable-net451+win8"
     }
   },
   "testRunner": "xunit",
diff --git a/test/Microsoft.AspNetCore.CookiePolicy.Test/project.json b/test/Microsoft.AspNetCore.CookiePolicy.Test/project.json
index 4ee196a260..d39a059744 100644
--- a/test/Microsoft.AspNetCore.CookiePolicy.Test/project.json
+++ b/test/Microsoft.AspNetCore.CookiePolicy.Test/project.json
@@ -6,6 +6,7 @@
     "Microsoft.AspNetCore.CookiePolicy": "1.0.0-*",
     "Microsoft.AspNetCore.TestHost": "1.0.0-*",
     "Microsoft.Extensions.DependencyInjection": "1.0.0-*",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit": "2.1.0"
   },
   "frameworks": {
@@ -19,10 +20,11 @@
         "xunit.runner.console": "2.1.0"
       }
     },
-    "dnxcore50": { 
+    "dnxcore50": {
       "dependencies": {
         "xunit.runner.aspnet": "2.0.0-aspnet-*"
-      }
+      },
+      "imports": "portable-net451+win8"
     }
   },
   "testRunner": "xunit",
diff --git a/test/Microsoft.Owin.Security.Interop.Test/project.json b/test/Microsoft.Owin.Security.Interop.Test/project.json
index 660f338685..46fd46b489 100644
--- a/test/Microsoft.Owin.Security.Interop.Test/project.json
+++ b/test/Microsoft.Owin.Security.Interop.Test/project.json
@@ -8,6 +8,7 @@
     "Microsoft.Owin.Security.Cookies": "3.0.1",
     "Microsoft.Owin.Security.Interop": "1.0.0-*",
     "Microsoft.Owin.Testing": "3.0.1",
+    "Microsoft.NETCore.Platforms": "1.0.1-*",
     "xunit": "2.1.0",
     "xunit.runner.console": "2.1.0"
   },