diff --git a/build/pipelines/azure-pipelines.loc.yaml b/build/pipelines/azure-pipelines.loc.yaml
index bfd7924f..a766d36c 100644
--- a/build/pipelines/azure-pipelines.loc.yaml
+++ b/build/pipelines/azure-pipelines.loc.yaml
@@ -5,8 +5,6 @@
 # resources to run.
 #
 
-# Expects a variable called LocServiceKey to contain the OAuth client secret for Touchdown.
-
 schedules:
 - cron: "0 5 * * *"
   displayName: Daily sync
@@ -20,6 +18,9 @@ pr: none
 
 name: $(BuildDefinitionName)_$(date:yyMM).$(date:dd)$(rev:rrr)
 
+variables:
+  isMainBranch: ${{ eq(variables['Build.SourceBranch'], 'refs/heads/main') }}
+
 jobs:
 - job: Localize
   pool:
@@ -29,16 +30,19 @@ jobs:
   steps:
   - checkout: self
     clean: true
-    
-  - task: MicrosoftTDBuild.tdbuild-task.tdbuild-task.TouchdownBuildTask@2
+
+  - task: MicrosoftTDBuild.tdbuild-task.tdbuild-task.TouchdownBuildTask@4
     displayName: Send resources to Touchdown Build
     inputs:
       teamId: 86
-      TDBuildServiceConnection: EE-TDBuild-Localization
+      authType: FederatedIdentity
+      FederatedIdentityServiceConnection: EE-TDBuild-Localization-FC
       isPreview: false
       relativePathRoot: src/Calculator/Resources/en-US/
       resourceFilePath: '*.resw'
       outputDirectoryRoot: src/Calculator/Resources/
+      ${{ if eq(variables['isMainBranch'], false) }}:
+        localizationTarget: false
 
   - script: |
       cd $(Build.SourcesDirectory)