diff --git a/.github/workflows/compiler_playground.yml b/.github/workflows/compiler_playground.yml
index 0a2551ce3a..2ef9920c26 100644
--- a/.github/workflows/compiler_playground.yml
+++ b/.github/workflows/compiler_playground.yml
@@ -50,3 +50,4 @@ jobs:
         with:
           name: test-results
           path: compiler/apps/playground/test-results
+          if-no-files-found: ignore
diff --git a/.github/workflows/devtools_regression_tests.yml b/.github/workflows/devtools_regression_tests.yml
index f8e5fefca9..399772cf83 100644
--- a/.github/workflows/devtools_regression_tests.yml
+++ b/.github/workflows/devtools_regression_tests.yml
@@ -47,6 +47,7 @@ jobs:
         with:
           name: build
           path: build
+          if-no-files-found: error
 
   build_devtools_and_process_artifacts:
     name: Build DevTools and process artifacts
@@ -84,17 +85,20 @@ jobs:
         with:
           name: react-devtools
           path: build/devtools.tgz
+          if-no-files-found: error
       # Simplifies getting the extension for local testing
       - name: Archive chrome extension
         uses: actions/upload-artifact@v4
         with:
           name: react-devtools-chrome-extension
           path: build/devtools/chrome-extension.zip
+          if-no-files-found: error
       - name: Archive firefox extension
         uses: actions/upload-artifact@v4
         with:
           name: react-devtools-firefox-extension
           path: build/devtools/firefox-extension.zip
+          if-no-files-found: error
 
   run_devtools_tests_for_versions:
     name: Run DevTools tests for versions
@@ -179,3 +183,4 @@ jobs:
         with:
           name: screenshots
           path: ./tmp/screenshots
+          if-no-files-found: warn
diff --git a/.github/workflows/runtime_build_and_test.yml b/.github/workflows/runtime_build_and_test.yml
index 1cb4875597..2ebe7ac5f3 100644
--- a/.github/workflows/runtime_build_and_test.yml
+++ b/.github/workflows/runtime_build_and_test.yml
@@ -302,6 +302,7 @@ jobs:
         with:
           name: _build_${{ matrix.worker_id }}_${{ matrix.release_channel }}
           path: build
+          if-no-files-found: error
 
   test_build:
     name: yarn test-build
@@ -426,6 +427,7 @@ jobs:
           path: |
             ./build.tgz
             ./build2.tgz
+          if-no-files-found: error
 
   check_error_codes:
     name: Search build artifacts for unminified errors
@@ -603,11 +605,13 @@ jobs:
         with:
           name: flight-playwright-report
           path: fixtures/flight/playwright-report
+          if-no-files-found: warn
       - name: Archive Flight fixture artifacts
         uses: actions/upload-artifact@v4
         with:
           name: flight-test-results
           path: fixtures/flight/test-results
+          if-no-files-found: ignore
 
   # ----- DEVTOOLS -----
   build_devtools_and_process_artifacts:
@@ -655,6 +659,7 @@ jobs:
         with:
           name: react-devtools-${{ matrix.browser }}-extension
           path: build/devtools/${{ matrix.browser }}-extension.zip
+          if-no-files-found: error
 
   merge_devtools_artifacts:
     name: Merge DevTools artifacts
@@ -767,3 +772,4 @@ jobs:
         with:
           name: sizebot-message
           path: sizebot-message.md
+          if-no-files-found: ignore
diff --git a/.github/workflows/runtime_commit_artifacts.yml b/.github/workflows/runtime_commit_artifacts.yml
index 03795b7d2d..ed97d51d98 100644
--- a/.github/workflows/runtime_commit_artifacts.yml
+++ b/.github/workflows/runtime_commit_artifacts.yml
@@ -170,10 +170,12 @@ jobs:
         with:
           name: compiled
           path: compiled/
+          if-no-files-found: error
       - uses: actions/upload-artifact@v4
         with:
           name: compiled-rn
           path: compiled-rn/
+          if-no-files-found: error
 
   commit_www_artifacts:
     needs: download_artifacts