diff --git a/ansible/roles/profile_atlas/tasks/nextcloud.yml b/ansible/roles/profile_atlas/tasks/nextcloud.yml
index 4bb8f84..07a7305 100644
--- a/ansible/roles/profile_atlas/tasks/nextcloud.yml
+++ b/ansible/roles/profile_atlas/tasks/nextcloud.yml
@@ -150,6 +150,15 @@
       diff: false
       register: atlas_nextcloud_private_configuration
 
+    - name: Hide ONLYOFFICE welcome and example endpoints without changing editor routes
+      ansible.builtin.template:
+        src: atlas-onlyoffice-access.conf.j2
+        dest: "{{ atlas_nextcloud_private_dir }}/onlyoffice-access.conf"
+        owner: "{{ atlas_admin_username }}"
+        group: "{{ atlas_admin_group }}"
+        mode: "0644"
+      register: atlas_onlyoffice_access_configuration
+
     - name: Download checksum-pinned compatible application releases
       ansible.builtin.get_url:
         url: "{{ item.url }}"
@@ -239,6 +248,7 @@
                  atlas_nextcloud_quadlets.results |
                  selectattr('item', 'equalto', 'atlas-nextcloud.network') |
                  selectattr('changed') | list | length > 0 or
+                 (item == 'atlas-onlyoffice.service' and atlas_onlyoffice_access_configuration is changed) or
                  atlas_nextcloud_private_configuration is changed or
                  atlas_nextcloud_secret_files is changed) else 'started' }}
           loop: "{{ atlas_nextcloud_services }}"
diff --git a/ansible/roles/profile_atlas/templates/atlas-onlyoffice-access.conf.j2 b/ansible/roles/profile_atlas/templates/atlas-onlyoffice-access.conf.j2
new file mode 100644
index 0000000..2bcb8fc
--- /dev/null
+++ b/ansible/roles/profile_atlas/templates/atlas-onlyoffice-access.conf.j2
@@ -0,0 +1,8 @@
+# Managed by Ansible; loaded inside the ONLYOFFICE Nginx server block.
+# Return-only server rewrite rules run before the vendor welcome redirect.
+if ($uri = /) {
+  return 404;
+}
+if ($uri ~* "^/([0-9]+\.[0-9]+\.[0-9]+[-.][A-Za-z0-9_-]+/)?(welcome|example)(/|$)") {
+  return 404;
+}
diff --git a/ansible/roles/profile_atlas/templates/atlas-onlyoffice.container.j2 b/ansible/roles/profile_atlas/templates/atlas-onlyoffice.container.j2
index fb90d17..69d4150 100644
--- a/ansible/roles/profile_atlas/templates/atlas-onlyoffice.container.j2
+++ b/ansible/roles/profile_atlas/templates/atlas-onlyoffice.container.j2
@@ -10,6 +10,8 @@ NetworkAlias=atlas-onlyoffice
 PublishPort={{ ansible_host }}:{{ atlas_onlyoffice_http_port }}:80
 PublishPort=127.0.0.1:{{ atlas_onlyoffice_http_port }}:80
 EnvironmentFile={{ atlas_nextcloud_private_dir }}/onlyoffice.env
+Environment=EXAMPLE_ENABLED=false
+Volume={{ atlas_nextcloud_private_dir }}/onlyoffice-access.conf:/etc/nginx/includes/ds-atlas-access.conf:ro,Z
 Volume={{ atlas_nextcloud_root }}/office/data:/var/www/onlyoffice/Data:Z
 Volume={{ atlas_nextcloud_root }}/office/lib:/var/lib/onlyoffice:Z
 Volume={{ atlas_nextcloud_root }}/office/logs:/var/log/onlyoffice:Z
diff --git a/docs/atlas-nextcloud.md b/docs/atlas-nextcloud.md
index 6aee790..bb1f4d2 100644
--- a/docs/atlas-nextcloud.md
+++ b/docs/atlas-nextcloud.md
@@ -227,3 +227,17 @@ bind is read-only. Public Nextcloud HTTPS returned 200 and the pool was healthy.
 The targeted second Ansible run for mount applicability, options and discovery
 unit returned `changed=0`, with no failures. This is focused idempotency evidence,
 not a claim about a full Atlas playbook run.
+
+
+### ONLYOFFICE landing-page restriction
+
+An Ansible-managed, read-only Nginx include inside the ONLYOFFICE container returns
+404 for `/`, `/welcome` and `/example` (including their descendants and
+version-prefixed variants). The vendor editor, API, conversion, callbacks and
+WebSocket routes remain unchanged. `EXAMPLE_ENABLED=false` keeps the demo service
+inactive. No NPM Proxy Host edits or global CSP changes are required.
+
+On 2026-10-04 the targeted deployment restarted only ONLYOFFICE. Nginx syntax and
+Nextcloud's document-server check passed. Public root, welcome and example
+requests returned 404; `/healthcheck` remained 200. This check does not replace
+an authenticated browser edit/save test.