diff --git a/build/RepositoryBuild.targets b/build/RepositoryBuild.targets
index 60ccfbe98a..39c5224555 100644
--- a/build/RepositoryBuild.targets
+++ b/build/RepositoryBuild.targets
@@ -76,7 +76,11 @@
       <!-- If there are duplicate properties, the properties which are defined later in the order would override the earlier ones -->
       <RepositoryBuildArguments>$(RepositoryBuildArguments) /p:DotNetRestoreSourcePropsPath=$(GeneratedRestoreSourcesPropsPath)</RepositoryBuildArguments>
       <RepositoryBuildArguments>$(RepositoryBuildArguments) /p:DotNetPackageVersionPropsPath=$(GeneratedPackageVersionPropsPath)</RepositoryBuildArguments>
-      <RepositoryBuildArguments>$(RepositoryBuildArguments) /p:SignType=$(SignType)</RepositoryBuildArguments>
+      <!--
+        Temporary: Don't real-sign EntityFrameworkCore inline due issues with SignTool and powershell scripts.
+        TODO: remove when https://github.com/aspnet/BuildTools/pull/788 is merged.
+      -->
+      <RepositoryBuildArguments Condition="'$(RepositoryToBuild)' != 'EntityFrameworkCore'">$(RepositoryBuildArguments) /p:SignType=$(SignType)</RepositoryBuildArguments>
       <RepositoryBuildArguments>$(RepositoryBuildArguments) /p:BuildNumber=$(BuildNumber)</RepositoryBuildArguments>
       <RepositoryBuildArguments>$(RepositoryBuildArguments) /p:Configuration=$(Configuration)</RepositoryBuildArguments>
       <RepositoryBuildArguments>$(RepositoryBuildArguments) /p:IsFinalBuild=$(IsFinalBuild)</RepositoryBuildArguments>