---
schema_version: "1"
id: e557f37b88f32b470b969b86a30d5299fa791e3a16d508ca3eaa59504941eb6d
title: Prepare for System Maintenance
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/xcloud/264-0-0/availability_system_maintenance_preparation.md
canonical_url: https://help.salesforce.com/s/articleView?id=xcloud.availability_system_maintenance_preparation.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 888d29dffa178f3fc053fc827055f0ddfe3a9b81364893d73c3dff50f9a8ec61
description: To prepare for maintenance events, review these tips.
products:
  - Cross Cloud
release: "264"
---
# Prepare for System Maintenance

To prepare for maintenance events, review these tips.

- Enable [Enhanced Domains](https://help.salesforce.com/s/articleView?id=xcloud.domain_name_enhanced.htm&type=5&language=en_US).
- [Update hard-coded references](https://help.salesforce.com/s/articleView?id=000387070&type=1&language=en_US) that refer to your instance name (for example, https://NA10.salesforce.com) in integrations, email templates, and customizations to generic or relative URLs.
- Use [Salesforce Extensions](https://developer.salesforce.com/tools/vscode) for Visual Studio Code to [search for hard-coded references](https://help.salesforce.com/s/articleView?id=000381316&type=1&language=en_US) in your code base.
- If your company restricts Salesforce IP addresses, check that the current [Salesforce IP address ranges](https://help.salesforce.com/s/articleView?id=000321501&type=1&mode=1&language=en_US) are allowed on your network or email security filters. Alternatively, add [Salesforce domains](https://help.salesforce.com/s/articleView?id=xcloud.setup_domains.htm&type=5&language=en_US) to your allowlist.
- On your local network, set your [DNS timeout](https://help.salesforce.com/s/articleView?id=000382920&type=1&language=en_US) value to 5 minutes.
- Reschedule large jobs set to run within 72-24 hours of maintenance.
- Communicate downtime with users.

Maintenance should be seamless, but watch for these common issues.

- If you experience integration issues, restart the integration to clear the DNS cache and detect the new instance IP address.
- If you cache certificates, download the latest certificates on the [Certificate Changes](https://success.salesforce.com/_ui/core/chatter/groups/GroupProfilePage?g=0F9300000001oAF) Trailblazer group.