diff --git a/change/react-native-windows-2020-03-12-07-33-25-fixcerts.json b/change/react-native-windows-2020-03-12-07-33-25-fixcerts.json
new file mode 100644
index 00000000000..8ffdb6d1db7
--- /dev/null
+++ b/change/react-native-windows-2020-03-12-07-33-25-fixcerts.json
@@ -0,0 +1,9 @@
+{
+  "type": "none",
+  "comment": "Stop requiring signing certs for test apps",
+  "packageName": "react-native-windows",
+  "email": "acoates@microsoft.com",
+  "commit": "966064ea9e1049dbe84878185d6cbbfa85159e2e",
+  "dependentChangeType": "patch",
+  "date": "2020-03-12T14:33:24.996Z"
+}
\ No newline at end of file
diff --git a/packages/E2ETest/windows/ReactUWPTestApp/ReactUWPTestApp.csproj b/packages/E2ETest/windows/ReactUWPTestApp/ReactUWPTestApp.csproj
index b95b2875293..67fac0c4e38 100644
--- a/packages/E2ETest/windows/ReactUWPTestApp/ReactUWPTestApp.csproj
+++ b/packages/E2ETest/windows/ReactUWPTestApp/ReactUWPTestApp.csproj
@@ -17,8 +17,9 @@
     <FileAlignment>512</FileAlignment>
     <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <WindowsXamlEnableOverview>true</WindowsXamlEnableOverview>
-    <PackageCertificateThumbprint>867D41FE5091AED426000143497EA4DFC29A8097</PackageCertificateThumbprint>
+    <PackageCertificateThumbprint>FCDD40CD2A4E90DD1F10E5C04D5A958E6B5311CA</PackageCertificateThumbprint>
     <PackageCertificateKeyFile>ReactUWPTestApp_TemporaryKey.pfx</PackageCertificateKeyFile>
+    <AppxPackageSigningEnabled>True</AppxPackageSigningEnabled>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
diff --git a/packages/E2ETest/windows/ReactUWPTestApp/ReactUWPTestApp_TemporaryKey.pfx b/packages/E2ETest/windows/ReactUWPTestApp/ReactUWPTestApp_TemporaryKey.pfx
index a65eac5d773..7721a37204d 100644
Binary files a/packages/E2ETest/windows/ReactUWPTestApp/ReactUWPTestApp_TemporaryKey.pfx and b/packages/E2ETest/windows/ReactUWPTestApp/ReactUWPTestApp_TemporaryKey.pfx differ
diff --git a/packages/playground/windows/playground-win32/Playground-win32.vcxproj b/packages/playground/windows/playground-win32/Playground-win32.vcxproj
index c250d29ad17..d95fefbdcf4 100644
--- a/packages/playground/windows/playground-win32/Playground-win32.vcxproj
+++ b/packages/playground/windows/playground-win32/Playground-win32.vcxproj
@@ -63,6 +63,7 @@
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
   <PropertyGroup>
+    <AppxPackageSigningEnabled>False</AppxPackageSigningEnabled>
     <PackageCertificateThumbprint>867D41FE5091AED426000143497EA4DFC29A8097</PackageCertificateThumbprint>
     <PackageCertificateKeyFile>Playground_TemporaryKey.pfx</PackageCertificateKeyFile>
   </PropertyGroup>
diff --git a/packages/playground/windows/playground/Playground.vcxproj b/packages/playground/windows/playground/Playground.vcxproj
index fc9b74ed31c..fdb2ecfb063 100644
--- a/packages/playground/windows/playground/Playground.vcxproj
+++ b/packages/playground/windows/playground/Playground.vcxproj
@@ -59,6 +59,7 @@
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
   <PropertyGroup>
+    <AppxPackageSigningEnabled>False</AppxPackageSigningEnabled>
     <PackageCertificateThumbprint>867D41FE5091AED426000143497EA4DFC29A8097</PackageCertificateThumbprint>
     <PackageCertificateKeyFile>Playground_TemporaryKey.pfx</PackageCertificateKeyFile>
   </PropertyGroup>
diff --git a/vnext/Universal.IntegrationTests/React.Windows.Universal.IntegrationTests.vcxproj b/vnext/Universal.IntegrationTests/React.Windows.Universal.IntegrationTests.vcxproj
index a22136c0ccf..481a0841d68 100644
--- a/vnext/Universal.IntegrationTests/React.Windows.Universal.IntegrationTests.vcxproj
+++ b/vnext/Universal.IntegrationTests/React.Windows.Universal.IntegrationTests.vcxproj
@@ -42,6 +42,7 @@
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
     <IncludePath>$(ReactNativeWindowsDir)stubs;$(FollyDir);$(ReactNativeDir)\ReactCommon;$(YogaDir);$(ReactNativeWindowsDir)Common;$(ReactNativeWindowsDir)include;$(ReactNativeWindowsDir)ReactWindowsCore;$(ReactNativeWindowsDir)include\ReactWindowsCore;$(ReactNativeWindowsDir)include\ReactUWP;$(ReactNativeWindowsDir)ReactUWP;$(IncludePath)</IncludePath>
+    <AppxPackageSigningEnabled>False</AppxPackageSigningEnabled>
     <PackageCertificateKeyFile>React.Windows.Universal.IntegrationTests_TemporaryKey.pfx</PackageCertificateKeyFile>
     <PackageCertificateThumbprint>3178F848DBCD8815543899DE47FD75569C39F355</PackageCertificateThumbprint>
   </PropertyGroup>
diff --git a/vnext/Universal.UnitTests/React.Windows.Universal.UnitTests.vcxproj b/vnext/Universal.UnitTests/React.Windows.Universal.UnitTests.vcxproj
index c5c6e20a26b..27dbf311c86 100644
--- a/vnext/Universal.UnitTests/React.Windows.Universal.UnitTests.vcxproj
+++ b/vnext/Universal.UnitTests/React.Windows.Universal.UnitTests.vcxproj
@@ -38,16 +38,15 @@
   <ImportGroup Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
-  <PropertyGroup>
-    <PackageCertificateKeyFile>React.Windows.Universal.UnitTests_TemporaryKey.pfx</PackageCertificateKeyFile>
-  </PropertyGroup>
   <PropertyGroup>
     <LinkIncremental>true</LinkIncremental>
   </PropertyGroup>
   <PropertyGroup>
     <OutDir>$(ReactNativeWindowsDir)target\$(Platform)\$(Configuration)\$(MSBuildProjectName)\</OutDir>
     <IntDir>$(ReactNativeWindowsDir)build\$(Platform)\$(Configuration)\$(MSBuildProjectName)\</IntDir>
+    <AppxPackageSigningEnabled>False</AppxPackageSigningEnabled>
     <PackageCertificateThumbprint>63B3B5D575C3DE72218E4A75BFE5661B129042E8</PackageCertificateThumbprint>
+    <PackageCertificateKeyFile>React.Windows.Universal.UnitTests_TemporaryKey.pfx</PackageCertificateKeyFile>
   </PropertyGroup>
   <ItemDefinitionGroup>
     <ClCompile>