diff --git a/.azure/pipelines/helix-matrix.yml b/.azure/pipelines/helix-matrix.yml
index 17866abb4f260657ae1cc87e24ae8edb090aabbc..b73780366b11eb15765e62f6277f1461df91d98a 100644
--- a/.azure/pipelines/helix-matrix.yml
+++ b/.azure/pipelines/helix-matrix.yml
@@ -1,4 +1,4 @@
-# We only want to run full helix matrix on master
+# We only want to run full helix matrix on main
 pr: none
 trigger: none
 schedules:
diff --git a/.azure/pipelines/quarantined-pr.yml b/.azure/pipelines/quarantined-pr.yml
index 3afe05a53e5b092d08c0c9e5f23612096ac9d623..8ab7aa335ca7965f98c871e03ad61333fd8858eb 100644
--- a/.azure/pipelines/quarantined-pr.yml
+++ b/.azure/pipelines/quarantined-pr.yml
@@ -3,7 +3,7 @@
 #
 
 # Configure which branches trigger builds
-# We want to run quarantined tests on release/5.0 and master as well as on PRs
+# We want to run quarantined tests on release/5.0 and main as well as on PRs
 trigger:
   batch: true
   branches:
diff --git a/.azure/pipelines/quarantined-tests.yml b/.azure/pipelines/quarantined-tests.yml
index 3038bd89b87a972546ffff57d741085f0ede42e8..441ae35480069262841e6e5a898e32274b087535 100644
--- a/.azure/pipelines/quarantined-tests.yml
+++ b/.azure/pipelines/quarantined-tests.yml
@@ -1,4 +1,4 @@
-# We only want to run quarantined tests on master
+# We only want to run quarantined tests on main
 pr: none
 trigger: none
 
diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 874ce1d41d3879628a98ff1d136f0a87985ba064..a87195fe08de8b83db32a6af59c91c707ab061c7 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -1,10 +1,10 @@
 
 <!-- Thank you for submitting a pull request to our repo. -->
 
-<!-- If this is your first PR in the ASP.NET Core repo, please run through the checklist 
+<!-- If this is your first PR in the ASP.NET Core repo, please run through the checklist
 below to ensure a smooth review and merge process for your PR. -->
 
-- [ ] You've read the [Contributor Guide](https://github.com/dotnet/aspnetcore/blob/master/CONTRIBUTING.md) and [Code of Conduct](https://github.com/dotnet/aspnetcore/blob/master/CODE-OF-CONDUCT.md).
+- [ ] You've read the [Contributor Guide](https://github.com/dotnet/aspnetcore/blob/main/CONTRIBUTING.md) and [Code of Conduct](https://github.com/dotnet/aspnetcore/blob/main/CODE-OF-CONDUCT.md).
 - [ ] You've included unit or integration tests for your change, where applicable.
 - [ ] You've included inline docs for your change, where applicable.
 - [ ] There's an open issue for the PR that you are making. If you'd like to propose a new feature or change, please open an issue to discuss the change or find an existing issue.
diff --git a/.github/workflows/runtime-sync.yml b/.github/workflows/runtime-sync.yml
index 7223b06375452a25c97b09b02a77b110be796e1b..02fee2461edcee1f668b09098d3b7ac6b12bd9fb 100644
--- a/.github/workflows/runtime-sync.yml
+++ b/.github/workflows/runtime-sync.yml
@@ -18,14 +18,14 @@ jobs:
     - name: Checkout aspnetcore
       uses: actions/checkout@v2.0.0
       with:
-        # Test this script using changes in a fork 
+        # Test this script using changes in a fork
         repository: 'dotnet/aspnetcore'
         path: aspnetcore
-        ref: master
+        ref: main
     - name: Checkout runtime
       uses: actions/checkout@v2.0.0
       with:
-        # Test this script using changes in a fork 
+        # Test this script using changes in a fork
         repository: 'dotnet/runtime'
         path: runtime
         ref: master
@@ -67,6 +67,6 @@ jobs:
         title: 'Sync shared code from runtime'
         body: 'This PR was automatically generated to sync shared code changes from runtime. Fixes #18943'
         labels: area-servers
-        base: master
+        base: main
         branch: github-action/sync-runtime
         branch-suffix: timestamp
diff --git a/README.md b/README.md
index 0093542f888efeee5f2b0b5515c9855c02537aaf..ea46765aa8dffccc22190761a14fd3f232bfebc1 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ Follow the [Getting Started](https://docs.microsoft.com/aspnet/core/getting-star
 
 Also check out the [.NET Homepage](https://www.microsoft.com/net) for released versions of .NET, getting started guides, and learning resources.
 
-See the [Triage Process](https://github.com/dotnet/aspnetcore/blob/master/docs/TriageProcess.md) document for more information on how we handle incoming issues.
+See the [Triage Process](https://github.com/dotnet/aspnetcore/blob/main/docs/TriageProcess.md) document for more information on how we handle incoming issues.
 
 ## How to Engage, Contribute, and Give Feedback
 
diff --git a/build.ps1 b/build.ps1
index ee6abace37fcaaa9afd75191beb82985c208ebc2..b57ce7e8b3f2fb8c0da9483ebe515e30cecf48a8 100644
--- a/build.ps1
+++ b/build.ps1
@@ -116,7 +116,7 @@ Running tests.
     build.ps1 -test
 
 .LINK
-Online version: https://github.com/dotnet/aspnetcore/blob/master/docs/BuildFromSource.md
+Online version: https://github.com/dotnet/aspnetcore/blob/main/docs/BuildFromSource.md
 #>
 [CmdletBinding(PositionalBinding = $false, DefaultParameterSetName='Groups')]
 param(
@@ -363,7 +363,7 @@ if($dotnetFormat)
 {
     Write-Host -f Magenta "dotnet format tool is already installed."
 }
-else 
+else
 {
     Write-Host -f Magenta "Installing dotnet-format tool.."
     & dotnet tool install -g dotnet-format
diff --git a/docs/BuildFromSource.md b/docs/BuildFromSource.md
index 3a18f282727b0316da34e50468caf33ea92b5beb..ffe8949ef75cc5c764cd9dc733b7e6df957c9ab4 100644
--- a/docs/BuildFromSource.md
+++ b/docs/BuildFromSource.md
@@ -155,7 +155,7 @@ Studio because those projects are not listed in AspNetCore.sln.
 This will download the required tools and restore all projects inside the repository. At that point, you should be able
 to open the .sln file or one of the project specific .slnf files to work on the projects you care about.
 
-   > :bulb: Pro tip: you will also want to run this command after pulling large sets of changes. On the master
+   > :bulb: Pro tip: you will also want to run this command after pulling large sets of changes. On the main
    > branch, we regularly update the versions of .NET Core SDK required to build the repo.
    > You will need to restart Visual Studio every time we update the .NET Core SDK.
 
diff --git a/docs/Helix.md b/docs/Helix.md
index eafaf1e5ef25c4559ec8ef684636541e6a5559ed..ef7190b7050d3a2a603a7269c746924fd023c1ba 100644
--- a/docs/Helix.md
+++ b/docs/Helix.md
@@ -18,17 +18,17 @@ This will restore, and then publish all the test project including some bootstra
 
 ## Overview of the helix usage in our pipelines
 
-- Required queues: Windows10, OSX, Ubuntu1604 
+- Required queues: Windows10, OSX, Ubuntu1604
 - Full queue matrix: Windows[7, 81, 10], Ubuntu[1604, 1804, 2004], Centos7, Debian9, Redhat7, Fedora28, Arm64 (Win10, Debian9)
-- The queues are defined in [Helix.Common.props](https://github.com/dotnet/aspnetcore/blob/master/eng/targets/Helix.Common.props)
+- The queues are defined in [Helix.Common.props](https://github.com/dotnet/aspnetcore/blob/main/eng/targets/Helix.Common.props)
 
 [aspnetcore-ci](https://dev.azure.com/dnceng/public/_build?definitionId=278) runs non quarantined tests against the required helix queues as a required PR check and all builds on all branches.
 
-[aspnetcore-helix-matrix](https://dev.azure.com/dnceng/public/_build?definitionId=837) runs non quarantined tests against all queues twice a day only on public master.
+[aspnetcore-helix-matrix](https://dev.azure.com/dnceng/public/_build?definitionId=837) runs non quarantined tests against all queues twice a day only on public main.
 
-[aspnetcore-quarantined-pr](https://dev.azure.com/dnceng/public/_build?definitionId=869) runs only quarantined tests against the required queues on PRs and on master every 4 hours.
+[aspnetcore-quarantined-pr](https://dev.azure.com/dnceng/public/_build?definitionId=869) runs only quarantined tests against the required queues on PRs and on main every 4 hours.
 
-[aspnetcore-quarantined-tests](https://dev.azure.com/dnceng/public/_build?definitionId=331) runs only quarantined tests against all queues only on public master once a day at 11 PM.
+[aspnetcore-quarantined-tests](https://dev.azure.com/dnceng/public/_build?definitionId=331) runs only quarantined tests against all queues only on public main once a day at 11 PM.
 
 You can always manually queue pipeline runs by clicking on the link to the pipeline -> Run Pipeline -> select your branch/tag and commit
 
@@ -42,7 +42,7 @@ You can always manually queue pipeline runs by clicking on the link to the pipel
 
 The easiest way to look at a test failure is via the tests tab in azdo which now should show a summary of the errors and have attachments to the relevant console logs.
 
-You can also drill down into the helix web apis if you take the HelixJobId from the Debug tab of a failing test, and the HelixWorkItemName and go to: `https://helix.dot.net/api/2019-06-17/jobs/<jobId>/workitems/<workitemname>` which will show you more urls you can drill into for more info. 
+You can also drill down into the helix web apis if you take the HelixJobId from the Debug tab of a failing test, and the HelixWorkItemName and go to: `https://helix.dot.net/api/2019-06-17/jobs/<jobId>/workitems/<workitemname>` which will show you more urls you can drill into for more info.
 
 There's also a link embedded in the build.cmd log of the Tests: Helix x64 job on Azure Pipelines, near the bottom right that will look something like this:
 
diff --git a/docs/ReferenceResolution.md b/docs/ReferenceResolution.md
index cd8c706e1e3e721fcde91dc5e2ea86c90dad8b96..311533ea5d249f589aeff1a4d37ddc6725344b77 100644
--- a/docs/ReferenceResolution.md
+++ b/docs/ReferenceResolution.md
@@ -111,7 +111,7 @@ Once `darc` is installed and set-up, it can be used to modify the subscriptions
 Subscriptions are objects that define the ecosystem repos we are listening for updates to, the frequency we are looking for updates, and more.
 
 ```bash
-darc get-subscriptions --target-branch master --target-repo aspnetcore$ --regex
+darc get-subscriptions --target-branch main --target-repo aspnetcore$ --regex
 ```
 
 **Disable/enable a subscription**
diff --git a/docs/TriageProcess.md b/docs/TriageProcess.md
index 61955f123cdc1db264ed6a7fa645d2720368f399..4d7eb27e10bade0a5f07aa6af005e799a3b9a5cd 100644
--- a/docs/TriageProcess.md
+++ b/docs/TriageProcess.md
@@ -64,4 +64,4 @@ The following diagram summarizes the processes detailed above:
 
 
 ## References
-We rely on some automation to help us with this process. You can learn more about some of these by reading our [Issue Management Policies](https://github.com/dotnet/aspnetcore/blob/master/docs/IssueManagementPolicies.md) document.
+We rely on some automation to help us with this process. You can learn more about some of these by reading our [Issue Management Policies](https://github.com/dotnet/aspnetcore/blob/main/docs/IssueManagementPolicies.md) document.
diff --git a/eng/scripts/CodeCheck.ps1 b/eng/scripts/CodeCheck.ps1
index 509cdf84d685e93db3946cb0c9387328e438e68b..3efae451a33660a12a8858d5db95332fb575738a 100644
--- a/eng/scripts/CodeCheck.ps1
+++ b/eng/scripts/CodeCheck.ps1
@@ -131,7 +131,7 @@ try {
 
     foreach ($unexpectedVar in $versionVars) {
         LogError `
-            "Version variable '$unexpectedVar' does not have a matching entry in Version.Details.xml. See https://github.com/dotnet/aspnetcore/blob/master/docs/ReferenceResolution.md for instructions on how to add a new dependency." `
+            "Version variable '$unexpectedVar' does not have a matching entry in Version.Details.xml. See https://github.com/dotnet/aspnetcore/blob/main/docs/ReferenceResolution.md for instructions on how to add a new dependency." `
             -filepath "$repoRoot\eng\Versions.props"
     }
 
diff --git a/eng/scripts/InstallVisualStudio.ps1 b/eng/scripts/InstallVisualStudio.ps1
index 56c645fe9fd30d1f0938f634284c87654d72c0bd..24f9e0e69c5d45dd904120b5f0f65b77de0ea789 100644
--- a/eng/scripts/InstallVisualStudio.ps1
+++ b/eng/scripts/InstallVisualStudio.ps1
@@ -23,7 +23,7 @@
     Run the installer without UI and wait for installation to complete.
 .LINK
     https://visualstudio.com
-    https://github.com/dotnet/aspnetcore/blob/master/docs/BuildFromSource.md
+    https://github.com/dotnet/aspnetcore/blob/main/docs/BuildFromSource.md
 .EXAMPLE
     To install VS 2019 Enterprise, run this command in PowerShell:
 
diff --git a/src/Components/benchmarkapps/Wasm.Performance/benchmarks.compose.json b/src/Components/benchmarkapps/Wasm.Performance/benchmarks.compose.json
index 67ad05c767af78858332361ae73177b9bef4d1a7..26c259c18192a01a528a37e64477588f3ad3fd17 100644
--- a/src/Components/benchmarkapps/Wasm.Performance/benchmarks.compose.json
+++ b/src/Components/benchmarkapps/Wasm.Performance/benchmarks.compose.json
@@ -11,11 +11,11 @@
     "blazorwasmbenchmark": {
       "source": {
         "repository": "https://github.com/dotnet/AspNetCore.git",
-        "branchOrCommit": "master",
+        "branchOrCommit": "main",
         "dockerfile": "src/Components/benchmarkapps/Wasm.Performance/dockerfile"
       },
       "buildArguments": [
-        "gitBranch=master"
+        "gitBranch=main"
       ],
       "waitForExit": true,
       "readyStateText": "Application started."
diff --git a/src/Components/benchmarkapps/Wasm.Performance/dockerfile b/src/Components/benchmarkapps/Wasm.Performance/dockerfile
index d291a53b4b6f0db057d5db9f3e66700d1ac8a6f6..79a1465657d0b5b5c5f2cf80cbcba0464660478b 100644
--- a/src/Components/benchmarkapps/Wasm.Performance/dockerfile
+++ b/src/Components/benchmarkapps/Wasm.Performance/dockerfile
@@ -12,7 +12,7 @@ RUN apt-get update \
     nodejs \
     git
 
-ARG gitBranch=master
+ARG gitBranch=main
 
 WORKDIR /src
 ADD https://api.github.com/repos/dotnet/aspnetcore/git/ref/heads/${gitBranch} /aspnetcore.commit
diff --git a/src/Http/Routing/test/testassets/Benchmarks/benchmarks.json b/src/Http/Routing/test/testassets/Benchmarks/benchmarks.json
index 48622c79689fbdaaf8fecb40d3bf31c813be0d0b..0b0ba5e13733255ad7b2fe109d0821390449b7d6 100644
--- a/src/Http/Routing/test/testassets/Benchmarks/benchmarks.json
+++ b/src/Http/Routing/test/testassets/Benchmarks/benchmarks.json
@@ -8,7 +8,7 @@
     },
     "Source": {
       "Repository": "https://github.com/dotnet/aspnetcore.git",
-      "BranchOrCommit": "master",
+      "BranchOrCommit": "main",
       "Project": "src/Routing/benchmarkapps/Benchmarks/Benchmarks.csproj"
     },
     "Port": 8080
diff --git a/src/JSInterop/Microsoft.JSInterop.JS/src/package.json b/src/JSInterop/Microsoft.JSInterop.JS/src/package.json
index 02410238d0d0a2ae8d304fa6b28f42942e1431b2..1bb08c8219cc0bb8b14b26329560c893f6f36e3e 100644
--- a/src/JSInterop/Microsoft.JSInterop.JS/src/package.json
+++ b/src/JSInterop/Microsoft.JSInterop.JS/src/package.json
@@ -20,7 +20,7 @@
   "bugs": {
     "url": "https://github.com/dotnet/aspnetcore/issues"
   },
-  "homepage": "https://github.com/dotnet/aspnetcore/tree/master/src/JSInterop",
+  "homepage": "https://github.com/dotnet/aspnetcore/tree/main/src/JSInterop",
   "files": [
     "dist/**"
   ],
diff --git a/src/Localization/README.md b/src/Localization/README.md
index 503620b3c67b873e38098ec60fcbf799ad948d88..492d99037584b2d52796ac44475565d57131db61 100644
--- a/src/Localization/README.md
+++ b/src/Localization/README.md
@@ -3,4 +3,4 @@ Localization
 
 These projects provide abstractions for localizing resources in .NET applications.
 
-The ASP.NET Core implementation of localization can be found in https://github.com/dotnet/aspnetcore/tree/master/src/Middleware/Localization.
+The ASP.NET Core implementation of localization can be found in https://github.com/dotnet/aspnetcore/tree/main/src/Middleware/Localization.
diff --git a/src/Mvc/README.md b/src/Mvc/README.md
index 07d0e587872e6a7c5a27128e242a5d2c6b9b6231..9a182d4ac905ecaa78f83b4912d6c422dd3ba507 100644
--- a/src/Mvc/README.md
+++ b/src/Mvc/README.md
@@ -3,8 +3,6 @@ ASP.NET Core MVC
 
 **Note: For ASP.NET MVC 5.x, Web API 2.x, and Web Pages 3.x (not ASP.NET Core), see https://github.com/aspnet/AspNetWebStack**
 
-Travis:   [![Travis](https://travis-ci.org/aspnet/Mvc.svg?branch=master)](https://travis-ci.org/aspnet/Mvc)
-
 ASP.NET Core MVC gives you a powerful, patterns-based way to build dynamic websites that enables a clean separation of concerns and gives you full control over markup for enjoyable, agile development. ASP.NET Core MVC includes many features that enable fast, TDD-friendly development for creating sophisticated applications that use the latest web standards.
 
 ASP.NET Core MVC includes support for building web pages and HTTP services in a single aligned framework that can be hosted in IIS or self-hosted in your own process.
diff --git a/src/Mvc/benchmarkapps/BasicApi/benchmarks.json b/src/Mvc/benchmarkapps/BasicApi/benchmarks.json
index 26a9d998c82b305cc486dd1971b3fa42613744d2..7567136dd03add7f6228dee877b662f36a5f5ccc 100644
--- a/src/Mvc/benchmarkapps/BasicApi/benchmarks.json
+++ b/src/Mvc/benchmarkapps/BasicApi/benchmarks.json
@@ -8,7 +8,7 @@
     "ReadyStateText": "Application started.",
     "Source": {
       "Repository": "https://github.com/dotnet/aspnetcore.git",
-      "BranchOrCommit": "master",
+      "BranchOrCommit": "main",
       "Project": "src/Mvc/benchmarkapps/BasicApi/BasicApi.csproj"
     }
   },
@@ -19,20 +19,20 @@
   },
   "BasicApi.GetUsingQueryString": {
     "ClientProperties": {
-      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/master/src/Mvc/benchmarkapps/BasicApi/getWithToken.lua"
+      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/main/src/Mvc/benchmarkapps/BasicApi/getWithToken.lua"
     },
     "Path": "/pet/findByStatus",
     "Query": "?status=available"
   },
   "BasicApi.GetUsingRouteValue": {
     "ClientProperties": {
-      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/master/src/Mvc/benchmarkapps/BasicApi/getWithToken.lua"
+      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/main/src/Mvc/benchmarkapps/BasicApi/getWithToken.lua"
     },
     "Path": "/pet/-1"
   },
   "BasicApi.GetUsingRouteValueWithoutAuthorization": {
     "ClientProperties": {
-      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/master/src/Mvc/benchmarkapps/BasicApi/getWithToken.lua"
+      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/main/src/Mvc/benchmarkapps/BasicApi/getWithToken.lua"
     },
     "Path": "/pet/anonymous/-1"
   },
@@ -41,14 +41,14 @@
   },
   "BasicApi.Post": {
     "ClientProperties": {
-      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/master/src/Mvc/benchmarkapps/BasicApi/postJsonWithToken.lua"
+      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/main/src/Mvc/benchmarkapps/BasicApi/postJsonWithToken.lua"
     },
     "Path": "/pet"
   },
   "BasicApi.PostWithoutDb": {
     "Path": "/pet/add-pet",
     "ClientProperties": {
-      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/master/src/Mvc/benchmarkapps/BasicApi/postJsonWithToken.lua"
+      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/main/src/Mvc/benchmarkapps/BasicApi/postJsonWithToken.lua"
     }
   }
 }
diff --git a/src/Mvc/benchmarkapps/BasicViews/benchmarks.json b/src/Mvc/benchmarkapps/BasicViews/benchmarks.json
index 96fd8cd0bc665015228400f3a44528b0ecce5ef0..5bbd67b6bfb100d8ff3017bc832e7d83dd143f3e 100644
--- a/src/Mvc/benchmarkapps/BasicViews/benchmarks.json
+++ b/src/Mvc/benchmarkapps/BasicViews/benchmarks.json
@@ -8,7 +8,7 @@
     "ReadyStateText": "Application started.",
     "Source": {
       "Repository": "https://github.com/dotnet/aspnetcore.git",
-      "BranchOrCommit": "master",
+      "BranchOrCommit": "main",
       "Project": "src/Mvc/benchmarkapps/BasicViews/BasicViews.csproj"
     }
   },
@@ -20,19 +20,19 @@
   },
   "BasicViews.Post": {
     "ClientProperties": {
-      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/master/src/Mvc/benchmarkapps/BasicViews/postWithToken.lua"
+      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/main/src/Mvc/benchmarkapps/BasicViews/postWithToken.lua"
     },
     "Path": "/Home/Index"
   },
   "BasicViews.PostIgnoringToken": {
     "ClientProperties": {
-      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/master/src/Mvc/benchmarkapps/BasicViews/postWithToken.lua"
+      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/main/src/Mvc/benchmarkapps/BasicViews/postWithToken.lua"
     },
     "Path": "/Home/IndexWithoutToken"
   },
   "BasicViews.PostWithoutToken": {
     "ClientProperties": {
-      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/master/src/Mvc/benchmarkapps/BasicViews/post.lua"
+      "Scripts": "https://raw.githubusercontent.com/dotnet/aspnetcore/main/src/Mvc/benchmarkapps/BasicViews/post.lua"
     },
     "Path": "/Home/IndexWithoutToken"
   }
diff --git a/src/Razor/README.md b/src/Razor/README.md
index e99bc694b5f0203d870609fdb0672e6fb5cae74a..ca0e025768ec925f7fa04c21cde98624eaa2c367 100644
--- a/src/Razor/README.md
+++ b/src/Razor/README.md
@@ -1,8 +1,6 @@
 Razor
 =====
 
-Travis:   [![Travis](https://travis-ci.org/aspnet/Razor.svg?branch=dev)](https://travis-ci.org/aspnet/Razor)
-
 The Razor syntax provides a fast, terse, clean and lightweight way to combine server code with HTML to create dynamic web content. This repo contains the parser and the C# code generator for the Razor syntax.
 
 This project is part of ASP.NET Core. You can find samples, documentation and getting started instructions for ASP.NET Core at the [Home](https://www.github.com/aspnet/home) repo.
diff --git a/src/Shared/runtime/ReadMe.SharedCode.md b/src/Shared/runtime/ReadMe.SharedCode.md
index eb86cd931280ecf3411f1865aae497d6a35ea0e0..53cd1f4069820557bf004891d7dad8579841742d 100644
--- a/src/Shared/runtime/ReadMe.SharedCode.md
+++ b/src/Shared/runtime/ReadMe.SharedCode.md
@@ -24,7 +24,7 @@ dotnet/AspNetCore code paths:
 - `PS D:\github\runtime\src\libraries\System.Net.Http\tests\UnitTests> dotnet build /t:test`
 
 ## Building dotnet/AspNetCore code:
-- https://github.com/dotnet/AspNetCore/blob/master/docs/BuildFromSource.md
+- https://github.com/dotnet/aspnetcore/blob/main/docs/BuildFromSource.md
 - Run restore in the root once: `PS D:\github\AspNetCore> .\restore.cmd`
 - Activate to use the repo local runtime: `PS D:\github\AspNetCore> . .\activate.ps1`
 - Build the individual projects:
diff --git a/src/SignalR/README.md b/src/SignalR/README.md
index 09ddfdd604a4d31cd3776895e2ec445698079cc6..8ceef4c0ee7af4ecdc702e391b2f3e4eb8079b0d 100644
--- a/src/SignalR/README.md
+++ b/src/SignalR/README.md
@@ -32,7 +32,7 @@ The following contains a description of the sub-directories.
 
 By default, the build script will try to build Java and Typescript projects. If you don't want to include those, you can pass "-NoBuildJava" and "-NoBuildNodeJS" respectively to the build script to skip them. Or "--no-build-java" and "--no-build-nodejs" on MacOS or Linux.
 
-To build this specific project from source, you can follow the instructions [on building a subset of the code](https://github.com/dotnet/aspnetcore/blob/master/docs/BuildFromSource.md#building-a-subset-of-the-code).
+To build this specific project from source, you can follow the instructions [on building a subset of the code](https://github.com/dotnet/aspnetcore/blob/main/docs/BuildFromSource.md#building-a-subset-of-the-code).
 
 Or for the less detailed explanation, run the following command inside this directory.
 ```powershell
@@ -49,7 +49,7 @@ $ ./build.sh
 
 This project's tests require having "java" and "npm" on your path.
 
-To run the tests for this project, you can [run the tests on the command line](https://github.com/dotnet/aspnetcore/blob/master/docs/BuildFromSource.md#running-tests-on-command-line) in this directory.
+To run the tests for this project, you can [run the tests on the command line](https://github.com/dotnet/aspnetcore/blob/main/docs/BuildFromSource.md#running-tests-on-command-line) in this directory.
 
 Or for the less detailed explanation, run the following command inside this directory.
 ```powershell
diff --git a/src/SignalR/clients/java/signalr/core/build.gradle b/src/SignalR/clients/java/signalr/core/build.gradle
index 41b7668da1e0e4c4e196da9e31e1568b8f4b5faf..5465c4a65e631e22fcb605fad37bb8ff16e601bc 100644
--- a/src/SignalR/clients/java/signalr/core/build.gradle
+++ b/src/SignalR/clients/java/signalr/core/build.gradle
@@ -42,7 +42,7 @@ task generatePOM {
             scm {
                 connection 'scm:git:git://github.com/dotnet/aspnetcore.git'
                 developerConnection 'scm:git:git://github.com/dotnet/aspnetcore.git'
-                url 'http://github.com/dotnet/aspnetcore/tree/master'
+                url 'http://github.com/dotnet/aspnetcore/tree/main'
             }
             developers {
                 developer {
@@ -78,4 +78,4 @@ class Version {
     }
 }
 
-compileJava.dependsOn generateVersionClass
\ No newline at end of file
+compileJava.dependsOn generateVersionClass
diff --git a/src/SignalR/clients/java/signalr/messagepack/build.gradle b/src/SignalR/clients/java/signalr/messagepack/build.gradle
index 365d56d383cea20b3df1e20fc223181eccab75e5..9d73f0cda469dae06b4392ddf858430266397530 100644
--- a/src/SignalR/clients/java/signalr/messagepack/build.gradle
+++ b/src/SignalR/clients/java/signalr/messagepack/build.gradle
@@ -41,7 +41,7 @@ task generatePOM {
             scm {
                 connection 'scm:git:git://github.com/dotnet/aspnetcore.git'
                 developerConnection 'scm:git:git://github.com/dotnet/aspnetcore.git'
-                url 'http://github.com/dotnet/aspnetcore/tree/master'
+                url 'http://github.com/dotnet/aspnetcore/tree/main'
             }
             developers {
                 developer {
@@ -53,4 +53,4 @@ task generatePOM {
     }.writeTo("${buildDir}/libs/signalr-messagepack-${project.version}.pom")
 }
 
-task createPackage(dependsOn: [jar,sourceJar,javadocJar,generatePOM])
\ No newline at end of file
+task createPackage(dependsOn: [jar,sourceJar,javadocJar,generatePOM])
diff --git a/src/SignalR/clients/ts/signalr-protocol-msgpack/package.json b/src/SignalR/clients/ts/signalr-protocol-msgpack/package.json
index 5b5737b3916c889c1ecfac28839c51092e9581c3..8d75a0516e13169780fc793bc33d6c7095f7b848 100644
--- a/src/SignalR/clients/ts/signalr-protocol-msgpack/package.json
+++ b/src/SignalR/clients/ts/signalr-protocol-msgpack/package.json
@@ -37,7 +37,7 @@
   "bugs": {
     "url": "https://github.com/dotnet/aspnetcore/issues"
   },
-  "homepage": "https://github.com/dotnet/aspnetcore/tree/master/src/SignalR#readme",
+  "homepage": "https://github.com/dotnet/aspnetcore/tree/main/src/SignalR#readme",
   "files": [
     "dist/**/*",
     "src/**/*"
diff --git a/src/SignalR/clients/ts/signalr/package.json b/src/SignalR/clients/ts/signalr/package.json
index 8ee7acecf0c2724ef9d9703038379d809e8bbaa8..5a5fb61dbecf20be9aa0109a893eb88a252ebd36 100644
--- a/src/SignalR/clients/ts/signalr/package.json
+++ b/src/SignalR/clients/ts/signalr/package.json
@@ -40,7 +40,7 @@
   "bugs": {
     "url": "https://github.com/dotnet/aspnetcore/issues"
   },
-  "homepage": "https://github.com/dotnet/aspnetcore/tree/master/src/SignalR#readme",
+  "homepage": "https://github.com/dotnet/aspnetcore/tree/main/src/SignalR#readme",
   "files": [
     "dist/**/*",
     "src/**/*"