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Salesforce's Retirement of OAuth Username-Password Flow: Implications for Real Estate CRM Integrations

Salesforce's deprecation of the OAuth 2.0 username-password flow in Winter '27 necessitates immediate action for real estate firms to maintain secure CRM integrations.

Salesforce has announced the deprecation of the OAuth 2.0 username-password flow for connected apps, effective with the Winter '27 release. This change requires real estate firms to transition their CRM integrations to more secure authentication methods to ensure uninterrupted operations.

Key Details

  • Deprecation Timeline: The OAuth 2.0 username-password flow will be retired in Winter '27. Sandbox preview instances will upgrade on August 28-29, 2026, with production instances following on October 9-10, 2026. (trailblazingwithsalesforce.com)

  • Recommended Alternatives: Salesforce advises transitioning to the client credentials flow or the JWT bearer flow for server-to-server integrations. User-facing applications should adopt the web server flow with PKCE. (trailblazingwithsalesforce.com)

Implications for Real Estate Firms

Real estate companies often rely on automated lead routing, data synchronization, and other integrations between their websites, CRM systems, and third-party platforms. The retirement of the username-password flow means that any integration currently using this method will cease to function post-upgrade unless updated.

Action Steps:

  1. Audit Existing Integrations: Identify all systems and applications that utilize the OAuth 2.0 username-password flow for authentication.

  2. Plan Migration: Develop a strategy to transition each integration to one of the recommended authentication methods.

  3. Test Thoroughly: Before the production upgrade in October, test all updated integrations in a sandbox environment to ensure they function correctly.

By proactively addressing this change, real estate firms can maintain the reliability and security of their CRM integrations, ensuring seamless operations and data integrity.

For assistance in updating your Salesforce integrations, consider scheduling a consultation with our team to ensure a smooth transition.


Related: automation for real estate & brokerages · what we build

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