--- schema_version: "1" id: 58b456ec14dedeeb9da614add256a642eec262caa605d3170224ee5836da35aa title: Use a Custom Service Unavailable Page in Your Salesforce Tabs + Visualforce Site collection: admin version: current locale: en-us portal_url: https://docs.salesforce.com/admin/current/en-us/experience/264-0-0/networks_custom_sna_page.md canonical_url: https://help.salesforce.com/s/articleView?id=experience.networks_custom_sna_page.htm&release=264.0.0&type=5 source_site: help.salesforce.com content_type: documentation content_hash: 6fc7eda25f4c4d358aaba418dfa093414463ef41a40e9444db44d25a65063bbf description: On rare occasions, if your Salesforce Tabs + Visualforce site isn’t available because of a service outage, Salesforce displays a generic Service Not Available page with Lightning Platform branding. You can replace this page with a custom company-branded static resource page for a personalized user experience for your Salesforce Tabs + Visualforce site members. products: - Experiences release: "264" --- # Use a Custom Service Unavailable Page in Your Salesforce Tabs + Visualforce Site On rare occasions, if your Salesforce Tabs + Visualforce site isn’t available because of a service outage, Salesforce displays a generic Service Not Available page with Lightning Platform branding. You can replace this page with a custom company-branded static resource page for a personalized user experience for your Salesforce Tabs + Visualforce site members. ### Required Editions
Available in: Salesforce Classic and Lightning Experience
Available in: Enterprise, Performance, Unlimited, and Developer Editions
Applies to: LWR, Aura, and Visualforce sites
The Service Not Available static resource: - Must be a public .zip file 5 MB or smaller. - Must contain a page named maintenance.html at the root level of the .zip file. Other resources in the .zip file, such as images or CSS files, can follow any directory structure. - Must contain only files that have file extensions. For more information, refer to Assigning Salesforce Site Error Pages in Salesforce Help. ![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-experience-communities-264-0-0-production-enus/bf7df212-91a1-4fa3-a007-4d6f3e3b470b/images/icon_note.png) Note This setting doesn’t apply to Experience Builder sites created with Experience Cloud. You can upload an Experience Builder Service Not Available page to your Salesforce Tabs + Visualforce site as a static resource, after it has been saved. 1. Open Experience Workspaces. 2. Navigate to **Administration** | **Pages**. 3. To search for and select your custom page, click ![Lookup search icon](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-experience-communities-264-0-0-production-enus/bf7df212-91a1-4fa3-a007-4d6f3e3b470b/communities/images/lookup.png) next to **Service Not Available**. 4. Click **Save**. If there’s a service outage at any time, your community displays your selected page. A couple things to keep in mind: - This page selection doesn’t affect sites that use Site.com Studio pages. - The Service Not Available page, after it’s customized, is available for all Salesforce Tabs + Visualforce sites in the same domain. To avoid using the same page for all the sites in your domain, create and assign separate Service Not Available pages for each site. For example, consider a scenario where you have two Salesforce Tabs + Visualforce sites in your domain: a customer community (universaltelco.my.site.com/customer) and a partner portal (universaltelco.my.site.com/partner). If you use a custom Service Not Available page for the customer community, then the partner portal displays the same page during a service outage. You can create and assign a separate Service Not Available page to the partner portal. Domains with a custom URL that contains a root path prefix use the site's Service Not Available page for paths that aren't custom URLs of other sites and have their own Service Not Available pages. For example, sites https://www.example.com/ and https://www.example.com/site1 have assigned Service Not Available pages. Site https://www.example.com/site2 doesn’t have an assigned Service Not Available page. Requests to https://www.example.com/, https://www.example.com/Page1, and https://www.example.com/site2 display the Service Not Available page assigned to https://www.example.com/. Requests to https://www.example.com/site1 and https://www.example.com/site1/Page1, display the Service Not Available page assigned to https://www.example.com/site1. If a site doesn’t have an assigned Service Not Available page, and the sites of parent custom URLs in the same domain also don't have assigned Service Not Available pages, the Maintenance page is displayed. - In certain circumstances, when you configure your site to display a custom error page, your site displays the standard Service Not Available page instead. This change happens by design when you switch to using the Salesforce content delivery network (CDN). This change also happens for sites that switch to using enhanced domains, because the Salesforce CDN is enabled by default for enhanced domains. For more information, see [Assigning Salesforce Site Error Pages](https://help.salesforce.com/s/articleView?id=platform.sites_error_pages.htm&type=5&language=en_US). #### See Also - [Use a Custom Service Not Available Page for Your Experience Builder Site](https://help.salesforce.com/s/articleView?id=experience.community_builder_sna_page.htm&release=264.0.0&type=5 "Maintain business continuity with customers and enable them to log cases when your site is down using the Service Not Available page in Experience Builder.")