Stabilize URLs for Visualforce, Experience Builder, Site.com Studio, and Content Files (Previously Released Critical Update)
Where: This change applies to Lightning Experience and Salesforce Classic in Contact Manager, Group, Professional, Enterprise, Performance, Unlimited, and Developer editions.
When: The critical update is activated automatically in production orgs on July 11, 2020 and in sandbox orgs when they are created or refreshed.
Why: When we remove the instance name from your URLs, your hostnames change. For example:
- mydomain--c.visualforce.com replaces mydomain--c.na1.visual.force.com
- mydomain--c.documentforce.com replaces mydomain--c.na1.content.force.com
All *.content.force.com URLs are replaced with *.documentforce.com.
To activate this critical update, from Setup, enter Critical Updates in the Quick Find Box and select Critical Updates. For Remove Instance Names from URLs for Visualforce, Experience Builder, Site.com Studio, and Content Files, click Activate.