---
schema_version: "1"
id: c1bb7db4ecd9c04bdb629095d80c76a09d3c8bf0951750e1562f57e0c37e145b
title: Domains
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/release-notes/264-0-0/rn_security_domains.md
canonical_url: https://help.salesforce.com/s/articleView?id=release-notes.rn_security_domains.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 3a5ec2e790aa64359eb9547d2e357c163f65fe6d38a45ab21c13cec1399e6d38
description: Redirections end in sandboxes for instanced URLs in API traffic. And if a third party serves your custom domain, update the target host name.
products:
  - Cross Cloud
release: "264"
---
# Domains

Redirections end in sandboxes for instanced URLs in API traffic. And if a third party serves your custom domain, update the target host name.

- **[Replace Instanced URLs in API Traffic](https://help.salesforce.com/s/articleView?id=release-notes.rn_security_domains_instanced_api.htm&release=264.0.0&type=5)**  
    To prevent disruption after infrastructure updates that change your instance name, replace instanced URLs in API traffic with your org’s My Domain login URL. That traffic stops in sandboxes in this release.
- **[Manage Custom Domains More Easily by Using a Stable Target Host Name](https://help.salesforce.com/s/articleView?id=release-notes.rn_security_update_target_host_name.htm&release=264.0.0&type=5)**  
    If you use a third-party proxy or CDN service and your org uses Salesforce Edge Network, work with your third-party provider to update the domain's target host name to your org's My Domain login URL.