If you are getting the following message: 


“We can’t display component CS_APP: authFlowFrame’ because it isn’t supported in Classic runtime. Ask your Salesforce admin to distribute this flow in Lightning runtime instead.” 

 

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Flows launched from a URL or from Setup use the Lightning runtime experience instead of the Classic runtime experience. Only Lightning runtime supports two-column flow screens, custom screen components, and local actions. Ask your Salesforce admin to enable the lightning runtime feature 'Enable Lightning runtime for flows' by going to:

 

Setup > Process Automation Settings > Enable Lightning runtime for flows

 

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