diff --git a/.github/workflows/playwright-e2e-reusable.yml b/.github/workflows/playwright-e2e-reusable.yml
index 886daa3ba3da..d70ac489d393 100644
--- a/.github/workflows/playwright-e2e-reusable.yml
+++ b/.github/workflows/playwright-e2e-reusable.yml
@@ -719,15 +719,25 @@ jobs:
           mkdir -p "$core_output/node_modules" "$core_output/dist" "$core_output/vite-temp"
           # Dependency installation can execute repository-controlled package-manager
           # configuration even with lifecycle scripts disabled. Keep it off the runner.
-          docker run --rm --read-only \
-            --cap-drop ALL --security-opt no-new-privileges \
-            --user "$(id -u):$(id -g)" \
-            --tmpfs /tmp:rw,nosuid,size=4g \
-            --mount "type=bind,source=$GITHUB_WORKSPACE,target=/workspace,readonly" \
-            --mount "type=bind,source=$core_output/node_modules,target=/workspace/$core_dir/node_modules" \
-            --workdir "/workspace/$core_dir" \
-            node:22.22.2-bookworm-slim \
-            yarn --ignore-scripts --frozen-lockfile --cache-folder /tmp/yarn-cache
+          # Retry transient registry failures — yarn v1 does not retry HTTP errors.
+          for attempt in 1 2 3; do
+            docker run --rm --read-only \
+              --cap-drop ALL --security-opt no-new-privileges \
+              --user "$(id -u):$(id -g)" \
+              --tmpfs /tmp:rw,nosuid,size=4g \
+              --mount "type=bind,source=$GITHUB_WORKSPACE,target=/workspace,readonly" \
+              --mount "type=bind,source=$core_output/node_modules,target=/workspace/$core_dir/node_modules" \
+              --workdir "/workspace/$core_dir" \
+              node:22.22.2-bookworm-slim \
+              yarn --ignore-scripts --frozen-lockfile --cache-folder /tmp/yarn-cache \
+                --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
           # Only temporary build output is writable; dependencies and source stay read-only.
           mkdir -p "$core_output/node_modules/.vite-temp"
diff --git a/.github/workflows/playwright-knowledge-graph-postgresql-e2e.yml b/.github/workflows/playwright-knowledge-graph-postgresql-e2e.yml
index b777679f9156..c738d776e1e5 100644
--- a/.github/workflows/playwright-knowledge-graph-postgresql-e2e.yml
+++ b/.github/workflows/playwright-knowledge-graph-postgresql-e2e.yml
@@ -366,7 +366,18 @@ jobs:
 
       - name: Install dependencies
         working-directory: openmetadata-ui/src/main/resources/ui/
-        run: yarn --ignore-scripts --frozen-lockfile
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn --ignore-scripts --frozen-lockfile --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       - name: Install Playwright Browsers
         run: npx playwright@1.57.0 install chromium --with-deps
diff --git a/.github/workflows/playwright-search-nightly.yml b/.github/workflows/playwright-search-nightly.yml
index 854946f9c3fb..2bcc6140ea57 100644
--- a/.github/workflows/playwright-search-nightly.yml
+++ b/.github/workflows/playwright-search-nightly.yml
@@ -64,7 +64,18 @@ jobs:
 
       - name: Install dependencies
         working-directory: openmetadata-ui/src/main/resources/ui/
-        run: yarn --ignore-scripts --frozen-lockfile
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn --ignore-scripts --frozen-lockfile --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       - name: Install Playwright Browsers
         run: npx playwright@1.57.0 install chromium --with-deps
diff --git a/.github/workflows/playwright-sso-login-nightly.yml b/.github/workflows/playwright-sso-login-nightly.yml
index d49080322bcf..a39e8b77cdb7 100644
--- a/.github/workflows/playwright-sso-login-nightly.yml
+++ b/.github/workflows/playwright-sso-login-nightly.yml
@@ -340,7 +340,18 @@ jobs:
       - name: Install dependencies
         if: env.SKIP_LEG != 'true'
         working-directory: openmetadata-ui/src/main/resources/ui/
-        run: yarn --ignore-scripts --frozen-lockfile
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn --ignore-scripts --frozen-lockfile --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       - name: Install Playwright Browsers
         if: env.SKIP_LEG != 'true'
diff --git a/.github/workflows/playwright-visual.yml b/.github/workflows/playwright-visual.yml
index 90d5180acb21..a2c2791acaaf 100644
--- a/.github/workflows/playwright-visual.yml
+++ b/.github/workflows/playwright-visual.yml
@@ -161,7 +161,18 @@ jobs:
 
       - name: Install dependencies
         working-directory: openmetadata-ui/src/main/resources/ui/
-        run: yarn --ignore-scripts --frozen-lockfile
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn --ignore-scripts --frozen-lockfile --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       # Runs inside the same Playwright image the baselines were generated with (see header
       # comment) instead of on the bare runner. `--network host` lets the container reach the
diff --git a/.github/workflows/release-branch-validate.yml b/.github/workflows/release-branch-validate.yml
index 4a4ad0ba30a2..bfd02d48acf9 100644
--- a/.github/workflows/release-branch-validate.yml
+++ b/.github/workflows/release-branch-validate.yml
@@ -242,7 +242,18 @@ jobs:
       - name: Install UI yarn packages
         if: steps.files.outputs.any == 'true'
         working-directory: ${{ env.UI_WORKING_DIRECTORY }}
-        run: yarn install --frozen-lockfile
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn install --frozen-lockfile --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       - name: ESLint + Prettier on changed files
         if: steps.files.outputs.any == 'true'
diff --git a/.github/workflows/security-scan.yml b/.github/workflows/security-scan.yml
index 3895fbd07acc..211380060b35 100644
--- a/.github/workflows/security-scan.yml
+++ b/.github/workflows/security-scan.yml
@@ -46,7 +46,18 @@ jobs:
 
       - name: Install UI dependencies
         working-directory: openmetadata-ui/src/main/resources/ui
-        run: yarn install --frozen-lockfile --ignore-scripts
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn install --frozen-lockfile --ignore-scripts --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       - name: Run Retire.js scan
         id: retire-scan
diff --git a/.github/workflows/typescript-type-generation.yml b/.github/workflows/typescript-type-generation.yml
index 5f988d733412..bf685a0d434f 100644
--- a/.github/workflows/typescript-type-generation.yml
+++ b/.github/workflows/typescript-type-generation.yml
@@ -139,7 +139,17 @@ jobs:
 
       - name: Install dependencies
         run: |
-          yarn install --frozen-lockfile
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn install --frozen-lockfile --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       - name: Generate TypeScript types
         run: |
@@ -160,7 +170,15 @@ jobs:
           # skips preinstall (core-components build) and postinstall (js-antlr), neither
           # of which parseSchemas.js needs.
           rm -f node_modules
-          yarn install --frozen-lockfile --ignore-scripts
+          for attempt in 1 2 3; do
+            yarn install --frozen-lockfile --ignore-scripts --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
           yarn parse-schema
 
       - name: Check for changes
diff --git a/.github/workflows/ui-sonarcloud-nightly.yml b/.github/workflows/ui-sonarcloud-nightly.yml
index fefd2b4190dd..edfe6209093e 100644
--- a/.github/workflows/ui-sonarcloud-nightly.yml
+++ b/.github/workflows/ui-sonarcloud-nightly.yml
@@ -74,7 +74,18 @@ jobs:
 
       - name: Install Yarn Packages
         working-directory: ${{ env.UI_WORKING_DIRECTORY }}
-        run: yarn install
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn install --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       - name: Run Coverage
         working-directory: ${{ env.UI_WORKING_DIRECTORY }}
diff --git a/.github/workflows/update-playwright-e2e-docs.yml b/.github/workflows/update-playwright-e2e-docs.yml
index a39229c47bf4..517c8b8d50dd 100644
--- a/.github/workflows/update-playwright-e2e-docs.yml
+++ b/.github/workflows/update-playwright-e2e-docs.yml
@@ -44,7 +44,18 @@ jobs:
 
       - name: Install Dependencies
         working-directory: openmetadata-ui/src/main/resources/ui
-        run: yarn install --frozen-lockfile --ignore-scripts
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn install --frozen-lockfile --ignore-scripts --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
 
       - name: Install Playwright Browsers
         working-directory: openmetadata-ui/src/main/resources/ui
diff --git a/.github/workflows/yarn-coverage.yml b/.github/workflows/yarn-coverage.yml
index e97427fa2359..b7f3acd0d10d 100644
--- a/.github/workflows/yarn-coverage.yml
+++ b/.github/workflows/yarn-coverage.yml
@@ -136,7 +136,18 @@ jobs:
           sudo make install_antlr_cli
       - name: Install Yarn Packages
         working-directory: ${{ env.UI_WORKING_DIRECTORY }}
-        run: yarn install
+        run: |
+          # Retry transient registry failures (5xx on tarball fetches) —
+          # yarn v1 does not retry HTTP errors on its own.
+          for attempt in 1 2 3; do
+            yarn install --network-timeout 100000 && break
+            if [[ "$attempt" -eq 3 ]]; then
+              echo "yarn install failed after 3 attempts" >&2
+              exit 1
+            fi
+            echo "::warning::yarn install attempt $attempt failed (registry blip?); retrying in $((attempt * 15))s"
+            sleep $((attempt * 15))
+          done
       - name: Run Coverage
         working-directory: ${{ env.UI_WORKING_DIRECTORY }}
         run: yarn test:cov-summary
diff --git a/docs/decisions/2026-10-16-ci-yarn-installs-retry-transient-registry-errors.md b/docs/decisions/2026-10-16-ci-yarn-installs-retry-transient-registry-errors.md
new file mode 100644
index 000000000000..21bd12b0b796
--- /dev/null
+++ b/docs/decisions/2026-10-16-ci-yarn-installs-retry-transient-registry-errors.md
@@ -0,0 +1,29 @@
+# CI yarn installs retry transient registry errors
+
+- **Status:** Accepted
+- **Revisions:** v1 2026-10-16 (initial)
+- **Deciders:** Chirag Madlani
+- **Guard:** reviewer
+- **Related:** #35556; RDF Playwright run 38749383300 attempt 1
+
+## Context
+Yarn v1 does not retry HTTP 5xx responses on tarball fetches. One `502 Bad Gateway` from
+`registry.yarnpkg.com` aborts the whole install and fails the job before any test runs, as it did
+in the RDF Playwright run above. `playwright-e2e-reusable.yml` already wrapped its installs in a
+retry loop; the other workflows did not.
+
+## Decision
+Every CI yarn v1 install whose failure fails the job runs in a 3-attempt loop with 15s then 30s
+linear backoff and `--network-timeout 100000`. The loop is written inline in each workflow step,
+not in a shared composite action or script: several of these workflows run on
+`pull_request_target` with the PR head checked out, where a shared helper would execute the PR's
+own copy of it.
+
+Exempt: installs marked `continue-on-error` (their failure cannot fail the job) and the
+`frontend-maven-plugin` installs in the poms.
+
+## Consequences
+A registry blip costs up to ~45s of waiting instead of a red job. A real outage fails after three
+attempts, at most about three install durations plus the waits. A new workflow that runs
+`yarn install` copies the same block. Revisit when the UI moves to yarn ≥2, which retries network
+errors itself, at which point the loops can go.