diff --git a/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.installer.yaml b/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.installer.yaml
deleted file mode 100644
index aeecc170c4e2c..0000000000000
--- a/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.installer.yaml
+++ /dev/null
@@ -1,19 +0,0 @@
-# Created with YamlCreate.ps1 v2.1.0 $debug=AUSU.5-1-22572-1
-# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.1.0.schema.json
-
-PackageIdentifier: Microsoft.dotnet
-PackageVersion: 3.1.402.15278
-MinimumOSVersion: 6.1.7601
-InstallerType: exe
-InstallerSwitches:
-  Silent: /quiet
-  SilentWithProgress: /passive
-  Custom: /install
-Commands:
-- dotnet
-Installers:
-- Architecture: x64
-  InstallerUrl: https://download.visualstudio.microsoft.com/download/pr/9706378b-f244-48a6-8cec-68a19a8b1678/1f90fd18eb892cbb0bf75d9cff377ccb/dotnet-sdk-3.1.402-win-x64.exe
-  InstallerSha256: C16DEC6D1FA3263D93187219CB37ADED705735F3C0442032D145936A9250553A
-ManifestType: installer
-ManifestVersion: 1.1.0
diff --git a/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.locale.en-US.yaml b/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.locale.en-US.yaml
deleted file mode 100644
index a972a9af99437..0000000000000
--- a/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.locale.en-US.yaml
+++ /dev/null
@@ -1,36 +0,0 @@
-# Created with YamlCreate.ps1 v2.1.0 $debug=AUSU.5-1-22572-1
-# yaml-language-server: $schema=https://aka.ms/winget-manifest.defaultLocale.1.1.0.schema.json
-
-PackageIdentifier: Microsoft.dotnet
-PackageVersion: 3.1.402.15278
-PackageLocale: en-US
-Publisher: Microsoft
-# PublisherUrl: 
-# PublisherSupportUrl: 
-# PrivacyUrl: 
-# Author: 
-PackageName: .NET Core
-PackageUrl: https://docs.microsoft.com/dotnet/core/
-License: MIT
-LicenseUrl: https://github.com/dotnet/core/blob/master/LICENSE.TXT
-# Copyright: 
-# CopyrightUrl: 
-ShortDescription: Microsoft.dotnet
-Description: .NET Core is an open-source, general-purpose development platform. You can create .NET Core apps for Windows, macOS, and Linux for x64, x86, ARM32, and ARM64 processors using multiple programming languages. Frameworks and APIs are provided for cloud, IoT, client UI, and machine learning.
-Moniker: dotnet
-Tags:
-- .net
-- .net-core
-- c#
-- csharp
-- dotnet
-- f#
-- fsharp
-- net
-- vb
-- visual-basic
-# Agreements: 
-# ReleaseNotes: 
-# ReleaseNotesUrl: 
-ManifestType: defaultLocale
-ManifestVersion: 1.1.0
diff --git a/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.yaml b/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.yaml
deleted file mode 100644
index b06303059129a..0000000000000
--- a/manifests/m/Microsoft/dotnet/3.1.402.15278/Microsoft.dotnet.yaml
+++ /dev/null
@@ -1,8 +0,0 @@
-# Created with YamlCreate.ps1 v2.1.0 $debug=AUSU.5-1-22572-1
-# yaml-language-server: $schema=https://aka.ms/winget-manifest.version.1.1.0.schema.json
-
-PackageIdentifier: Microsoft.dotnet
-PackageVersion: 3.1.402.15278
-DefaultLocale: en-US
-ManifestType: version
-ManifestVersion: 1.1.0