diff --git a/inventory/uat/host_vars/acp-backend.yml b/inventory/uat/host_vars/acp-backend.yml
index bb248ab..67c927d 100644
--- a/inventory/uat/host_vars/acp-backend.yml
+++ b/inventory/uat/host_vars/acp-backend.yml
@@ -1,5 +1,6 @@
 temp_dir: "C:\\deploy\\vpress\\temp"
 iis_site_name: "api-acp-2025"
+app_pool_name: "api-acp-2025"
 blue_path: "C:\\deploy\\vpress\\acp\\be\\blue"
 green_path: "C:\\deploy\\vpress\\acp\\be\\green"
 
diff --git a/inventory/uat/host_vars/acp-frontend.yml b/inventory/uat/host_vars/acp-frontend.yml
index 293a6c6..41ec78b 100644
--- a/inventory/uat/host_vars/acp-frontend.yml
+++ b/inventory/uat/host_vars/acp-frontend.yml
@@ -1,4 +1,5 @@
 temp_dir: "C:\\deploy\\vpress\\temp"
 iis_site_name: "uat-acp.vpress.vn"
+app_pool_name: "uat-acp.vpress.vn"
 blue_path: "C:\\deploy\\vpress\\acp\\fe\\blue"
 green_path: "C:\\deploy\\vpress\\acp\\fe\\green"
\ No newline at end of file
diff --git a/inventory/uat/host_vars/hnt-portal-backend.yml b/inventory/uat/host_vars/hnt-portal-backend.yml
index 2e401d3..9af33ce 100644
--- a/inventory/uat/host_vars/hnt-portal-backend.yml
+++ b/inventory/uat/host_vars/hnt-portal-backend.yml
@@ -1,5 +1,6 @@
 temp_dir: "C:\\deploy\\vpress\\temp"
 iis_site_name: "api-portal2-2025.vpress.vn"
+app_pool_name: "api-portal2-2025.vpress.vn"
 blue_path: "C:\\deploy\\vpress\\portal\\be\\hnt\\blue"
 green_path: "C:\\deploy\\vpress\\portal\\be\\hnt\\green"
 
diff --git a/inventory/uat/host_vars/hnt-portal-frontend.yml b/inventory/uat/host_vars/hnt-portal-frontend.yml
index a7aa4f7..5276295 100644
--- a/inventory/uat/host_vars/hnt-portal-frontend.yml
+++ b/inventory/uat/host_vars/hnt-portal-frontend.yml
@@ -1,4 +1,6 @@
 temp_dir: "C:\\deploy\\vpress\\temp"
 iis_site_name: "uat-portal2"
+app_pool_name: "uat-portal2"
+
 blue_path: "C:\\deploy\\vpress\\portal\\fe\\hnt\\blue"
 green_path: "C:\\deploy\\vpress\\portal\\fe\\hnt\\green"
\ No newline at end of file
diff --git a/inventory/uat/host_vars/hnt-resource-backend.yml b/inventory/uat/host_vars/hnt-resource-backend.yml
index 0b614cb..5150762 100644
--- a/inventory/uat/host_vars/hnt-resource-backend.yml
+++ b/inventory/uat/host_vars/hnt-resource-backend.yml
@@ -1,5 +1,7 @@
 temp_dir: "C:\\deploy\\vpress\\temp"
 iis_site_name: "resource.vpress.vn"
+app_pool_name: "resource.vpress.vn"
+
 blue_path: "C:\\deploy\\vpress\\resource\\hnt\\blue"
 green_path: "C:\\deploy\\vpress\\resource\\hnt\\green"
 
diff --git a/inventory/uat/host_vars/ktdt-portal-backend.yml b/inventory/uat/host_vars/ktdt-portal-backend.yml
index 9bd9a43..73a5beb 100644
--- a/inventory/uat/host_vars/ktdt-portal-backend.yml
+++ b/inventory/uat/host_vars/ktdt-portal-backend.yml
@@ -1,5 +1,7 @@
 temp_dir: "C:\\deploy\\vpress\\temp"
 iis_site_name: "api-portal-2025"
+app_pool_name: "api-portal-2025"
+
 blue_path: "C:\\deploy\\vpress\\portal\\be\\ktdt\\blue"
 green_path: "C:\\deploy\\vpress\\portal\\be\\ktdt\\green"
 
diff --git a/inventory/uat/host_vars/ktdt-portal-frontend.yml b/inventory/uat/host_vars/ktdt-portal-frontend.yml
index cb452ba..3e31022 100644
--- a/inventory/uat/host_vars/ktdt-portal-frontend.yml
+++ b/inventory/uat/host_vars/ktdt-portal-frontend.yml
@@ -1,4 +1,6 @@
 temp_dir: "C:\\deploy\\vpress\\temp"
 iis_site_name: "uat-portal.vpress.vn"
+app_pool_name: "uat-portal.vpress.vn"
+
 blue_path: "C:\\deploy\\vpress\\portal\\fe\\ktdt\\blue"
 green_path: "C:\\deploy\\vpress\\portal\\fe\\ktdt\\green"
\ No newline at end of file
diff --git a/inventory/uat/host_vars/ktdt-resource-backend.yml b/inventory/uat/host_vars/ktdt-resource-backend.yml
index e9b2918..da99fbb 100644
--- a/inventory/uat/host_vars/ktdt-resource-backend.yml
+++ b/inventory/uat/host_vars/ktdt-resource-backend.yml
@@ -1,5 +1,7 @@
 temp_dir: "C:\\deploy\\vpress\\temp"
 iis_site_name: "resource.vpress.vn"
+app_pool_name: "resource.vpress.vn"
+
 blue_path: "C:\\deploy\\vpress\\resource\\ktdt\\blue"
 green_path: "C:\\deploy\\vpress\\resource\\ktdt\\green"
 
diff --git a/roles/deploy-be-acp/tasks/main.yml b/roles/deploy-be-acp/tasks/main.yml
index 5eef374..923ad83 100644
--- a/roles/deploy-be-acp/tasks/main.yml
+++ b/roles/deploy-be-acp/tasks/main.yml
@@ -23,6 +23,12 @@
     name: iis_utils
     tasks_from: update_iis_physical_path.yml
 
+- name: start_iis_app_pool
+  import_role:
+    name: iis_utils
+    tasks_from: start_iis_app_pool.yml
+
+
 - name: set_site_aspnetcore_environment
   import_role:
     name: iis_utils
diff --git a/roles/iis_utils/tasks/start_iis_app_pool.yml b/roles/iis_utils/tasks/start_iis_app_pool.yml
new file mode 100644
index 0000000..e1b9e08
--- /dev/null
+++ b/roles/iis_utils/tasks/start_iis_app_pool.yml
@@ -0,0 +1,11 @@
+- name: Validate variables
+  assert:
+    that:
+      - app_pool_name is defined and app_pool_name | length > 0
+    fail_msg: "Thiếu hoặc rỗng biến cần thiết để start_iis_app_pool.yml!"
+
+# Start app pool
+- name: Start IIS App Pool
+  win_iis_webapppool:
+    name: "{{ app_pool_name }}"
+    state: started
\ No newline at end of file