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Reshmi Sangani 5Reshmi Sangani 5 

Enforce CORS Allowlist for Lightning Apps

I saw this update on the release notes and was not sure what exactly should be done to get ready for this update.
Can some please suggest what this update is all about?

Thank you!
SwethaSwetha (Salesforce Developers) 
HI Reshmi,
Recommend you to try the steps in https://help.salesforce.com/s/articleView?id=000363113&type=1 to determine the impact
  • Log in to your organization. Navigate to the Event Log File Browser(https://salesforce-elf.herokuapp.com/) application and click Production Login.
  • Select the CorsViolation event type for your search.
  • Click Apply.
  • If the resulting count is 0, then your organization isn’t affected by this release update.
  • If the resulting count is not 0, then your organization is affected by the update. To return the domains that are affected by the update, select the CORS Violation Record and click Apply. This will return the domains that are impacted by the update.
Related: https://help.salesforce.com/s/articleView?id=sf.embedded_chat_cors_allowlist.htm&type=5

Hope this helps you. Please mark this answer as best so that others facing the same issue will find this information useful. Thank you