diff --git a/.github/actions/load-verdaccio-with-amplify-js/action.yml b/.github/actions/load-verdaccio-with-amplify-js/action.yml
index b0f2f5552ac..c8cd349cb86 100644
--- a/.github/actions/load-verdaccio-with-amplify-js/action.yml
+++ b/.github/actions/load-verdaccio-with-amplify-js/action.yml
@@ -6,8 +6,7 @@ runs:
   steps:
     - name: Start verdaccio
       run: |
-        # This version supports Node.js v22
-        npx verdaccio@5.31.1 &
+        npx verdaccio@5.25.0 &
         while ! nc -z localhost 4873; do
           echo "Verdaccio not running yet"
           sleep 1
@@ -19,30 +18,25 @@ runs:
     - name: Install and run npm-cli-login
       shell: bash
       env:
-        NPM_REGISTRY_HOST: localhost:4873
-        NPM_REGISTRY: http://localhost:4873
+        NPM_REGISTRY: http://localhost:4873/
         NPM_USER: verdaccio
         NPM_PASS: verdaccio
         NPM_EMAIL: verdaccio@amplify.js
       run: |
-        # Make the HTTP request that npm addUser makes to avoid the "Exit handler never called" error
-        TOKEN=$(curl -s \
-        -H "Accept: application/json" \
-        -H "Content-Type:application/json" \
-        -X PUT --data "{\"name\": \"$NPM_USER\", \"password\": \"$NPM_PASS\", \"email\": \"$NPM_EMAIL\"}" \
-        $NPM_REGISTRY/-/user/org.couchdb.user:$NPM_USER 2>&1 | jq -r '.token')
-
-        # Set the Verdaccio registry and set the token for logging in
-        yarn config set registry $NPM_REGISTRY
-        npm set registry $NPM_REGISTRY
-        npm set //"$NPM_REGISTRY_HOST"/:_authToken $TOKEN
-    - name: Configure git
+        npm i -g npm-cli-adduser
+        npm-cli-adduser
+        sleep 1
+    - name: Configure registry and git
       shell: bash
       working-directory: ./amplify-js
       env:
+        NPM_REGISTRY: http://localhost:4873/
         NPM_USER: verdaccio
+        NPM_PASS: verdaccio
         NPM_EMAIL: verdaccio@amplify.js
       run: |
+        yarn config set registry $NPM_REGISTRY
+        npm set registry $NPM_REGISTRY
         git config --global user.email $NPM_EMAIL
         git config --global user.name $NPM_USER
         git status
diff --git a/.github/actions/node-and-build/action.yml b/.github/actions/node-and-build/action.yml
index becd2d49165..0af092c4c84 100644
--- a/.github/actions/node-and-build/action.yml
+++ b/.github/actions/node-and-build/action.yml
@@ -4,15 +4,13 @@ inputs:
   is-prebuild:
     required: false
     default: false
-  node_version:
-    required: false
 runs:
   using: 'composite'
   steps:
-    - name: Setup Node.js
+    - name: Setup Node.js 18
       uses: actions/setup-node@b39b52d1213e96004bfcb1c61a8a6fa8ab84f3e8 # v4.0.1
       with:
-        node-version: ${{ inputs.node_version || '18.x' }}
+        node-version: 18.20.2
       env:
         SEGMENT_DOWNLOAD_TIMEOUT_MINS: 2
     - uses: actions/cache@13aacd865c20de90d75de3b17ebe84f7a17d57d2 # v4.0.0
diff --git a/.github/integ-config/integ-all.yml b/.github/integ-config/integ-all.yml
index db7f9d64444..d29ae41ba42 100644
--- a/.github/integ-config/integ-all.yml
+++ b/.github/integ-config/integ-all.yml
@@ -829,7 +829,7 @@ tests:
     sample_name: [guest-access]
     spec: storage-client-server
     browser: *minimal_browser_list
-
+  
   # INAPPMESSAGING
   - test_name: integ_in_app_messaging
     desc: 'React InApp Messaging'
@@ -856,10 +856,3 @@ tests:
     spec: ssr-context-isolation
     yarn_script: ci:ssr-context-isolation
     browser: [chrome]
-  - test_name: integ_node_envs
-    desc: 'Node.js environment tests'
-    framework: node
-    category: integration
-    sample_name: auth-gql-storage
-    yarn_script: ci:node-env-test
-    node_versions: ['18.x', '20.x', '22.x']
diff --git a/.github/workflows/callable-e2e-test.yml b/.github/workflows/callable-e2e-test.yml
index fd9f9cb697a..18697cf5dc5 100644
--- a/.github/workflows/callable-e2e-test.yml
+++ b/.github/workflows/callable-e2e-test.yml
@@ -37,9 +37,6 @@ on:
       yarn_script:
         required: false
         type: string
-      node_versions:
-        required: false
-        type: string
 
 env:
   AMPLIFY_DIR: /home/runner/work/amplify-js/amplify-js/amplify-js
@@ -57,8 +54,6 @@ jobs:
           - ${{ fromJson(inputs.browser) }}
         sample_name:
           - ${{ fromJson(inputs.sample_name) }}
-        node_version:
-          - ${{ fromJson(inputs.node_versions) }}
       fail-fast: false
     timeout-minutes: ${{ inputs.timeout_minutes }}
 
@@ -69,8 +64,6 @@ jobs:
           path: amplify-js
       - name: Setup node and build the repository
         uses: ./amplify-js/.github/actions/node-and-build
-        with:
-          node_version: ${{ matrix.node_version }}
       - name: Setup samples staging repository
         uses: ./amplify-js/.github/actions/setup-samples-staging
         with:
diff --git a/.github/workflows/callable-e2e-tests.yml b/.github/workflows/callable-e2e-tests.yml
index 15f6b576f8d..c27c51ce57f 100644
--- a/.github/workflows/callable-e2e-tests.yml
+++ b/.github/workflows/callable-e2e-tests.yml
@@ -44,7 +44,6 @@ jobs:
       timeout_minutes: ${{ matrix.integ-config.timeout_minutes || 35 }}
       retry_count: ${{ matrix.integ-config.retry_count || 3 }}
       yarn_script: ${{ matrix.integ-config.yarn_script || '' }}
-      node_versions: ${{ toJSON(matrix.integ-config.node_versions) || '[""]' }}
 
   # e2e-test-runner-headless:
   #   name: E2E test runnner_headless
diff --git a/package.json b/package.json
index eef6052f3e7..06a17c0fdaf 100644
--- a/package.json
+++ b/package.json
@@ -130,9 +130,6 @@
 		"webpack-bundle-analyzer": "^4.7.0",
 		"webpack-cli": "^5.0.0"
 	},
-	"engines": {
-		"node": ">=18"
-	},
 	"resolutions": {
 		"@types/babel__traverse": "7.20.0",
 		"path-scurry": "1.10.0",
diff --git a/packages/aws-amplify/package.json b/packages/aws-amplify/package.json
index bd2e711ad49..f10ee23cf22 100644
--- a/packages/aws-amplify/package.json
+++ b/packages/aws-amplify/package.json
@@ -383,7 +383,7 @@
 			"name": "[Auth] confirmSignIn (Cognito)",
 			"path": "./dist/esm/auth/index.mjs",
 			"import": "{ confirmSignIn }",
-			"limit": "28.30 kB"
+			"limit": "28.27 kB"
 		},
 		{
 			"name": "[Auth] updateMFAPreference (Cognito)",
@@ -449,13 +449,13 @@
 			"name": "[Auth] Basic Auth Flow (Cognito)",
 			"path": "./dist/esm/auth/index.mjs",
 			"import": "{ signIn, signOut, fetchAuthSession, confirmSignIn }",
-			"limit": "30.10 kB"
+			"limit": "30.06 kB"
 		},
 		{
 			"name": "[Auth] OAuth Auth Flow (Cognito)",
 			"path": "./dist/esm/auth/index.mjs",
 			"import": "{ signInWithRedirect, signOut, fetchAuthSession }",
-			"limit": "21.50 kB"
+			"limit": "21.47 kB"
 		},
 		{
 			"name": "[Storage] copy (S3)",
diff --git a/packages/core/__tests__/utils/globalHelpers/globalHelpers.test.ts b/packages/core/__tests__/utils/globalHelpers/globalHelpers.test.ts
index bb7d2e39a9b..4d9dbd8bc17 100644
--- a/packages/core/__tests__/utils/globalHelpers/globalHelpers.test.ts
+++ b/packages/core/__tests__/utils/globalHelpers/globalHelpers.test.ts
@@ -44,6 +44,12 @@ describe('getGlobal', () => {
 
 			expect(getCrypto()).toEqual(mockCrypto);
 		});
+
+		it('should throw error if crypto is unavailable globally', () => {
+			mockWindow.mockImplementation(() => undefined);
+
+			expect(() => getCrypto()).toThrow(AmplifyError);
+		});
 	});
 
 	describe('getBtoa()', () => {
diff --git a/packages/core/src/utils/globalHelpers/index.ts b/packages/core/src/utils/globalHelpers/index.ts
index dc35f897bf6..622f4d3c3ef 100644
--- a/packages/core/src/utils/globalHelpers/index.ts
+++ b/packages/core/src/utils/globalHelpers/index.ts
@@ -13,16 +13,6 @@ export const getCrypto = () => {
 		return crypto;
 	}
 
-	try {
-		const crypto = require('node:crypto').webcrypto;
-
-		if (typeof crypto === 'object') {
-			return crypto;
-		}
-	} catch (_) {
-		// no-op
-	}
-
 	throw new AmplifyError({
 		name: 'MissingPolyfill',
 		message: 'Cannot resolve the `crypto` function from the environment.',