Salesforce Summer 26 Admin Checklist
The Summer ’26 production upgrade is landing on June 5 and June 12 for most Salesforce orgs. Sandboxes have been on preview since May 8, which means there is no excuse for surprises on production upgrade weekend. Here is the pre-upgrade checklist every admin needs before their org flips. Summer ’26 Production Upgrade Weekends 🚨 June 5 — TomorrowMain production waveMost orgs on NA, EU, and AP instances. If your org is on this wave, the checklist below needs to be complete today — not this weekend. 📅 June 12 — 8 daysFinal production waveRemaining instances. You have until June 11 EOD to complete all mandatory items. Use the time — do not save this checklist for June 10. The mandatory items — these break things if skipped 1. SAML migration New SAML defaults are enforced in Summer ’26. If your org uses SSO via SAML — whether Salesforce is the identity provider, the service provider, or both — you need to verify your Auth Provider configuration and test the full login flow in your Summer ’26 sandbox before production upgrade. A SAML configuration that worked in Spring ’26 may fail after the upgrade if the new defaults require updated settings. Additionally, Triple DES signing for SAML SSO stops working entirely in Summer ’26, as announced in Spring ’26. Any SAML configuration using Triple DES as the signing algorithm breaks on upgrade regardless of whether you took any other action. 2. Apex sharing and security defaults New Apex security behaviors are enforced. Custom Apex code that relies on specific sharing model assumptions from earlier releases needs review. If your org has custom Apex classes managing record-level access or security, test them against the Summer ’26 sandbox before your production upgrade date. 3. Standard Omni-Channel retirement Standard Omni-Channel was retired June 1. If your production org has not migrated to Enhanced Omni-Channel Routing, this is now urgent — not scheduled. Completing the migration before your production upgrade date is the priority. See the dedicated Omni-Channel migration article for the correct four-step sequence — channel migrations must happen before the routing switch is enabled. 4. Legacy PDF generation retirement A legacy PDF rendering behavior is retired in Summer ’26. Any process that generates PDFs from Salesforce — Quote PDFs, Visualforce-generated reports, any custom PDF output — should be tested in the Summer ’26 sandbox to confirm the output is correct before production upgrade. PDF rendering changes are difficult to detect until something generates incorrectly in front of a customer. Summer ’26 Pre-Production Upgrade ChecklistBefore June 5 or June 12 Mandatory — breaks things if skipped SAML auth provider configuration verifiedMandatoryNew SAML defaults enforced. Test full SSO login flow in Summer ’26 sandbox. Triple DES signing algorithm stops working entirely — update to SHA-256 if still using Triple DES.↳ Breaks: SSO login fails for all SAML-authenticated users after upgrade Custom Apex sharing code reviewedMandatoryNew Apex security defaults enforced. Custom Apex classes managing record-level access or sharing rules need testing in sandbox against the new defaults. Run Apex tests in the Summer ’26 sandbox before production upgrade.↳ Breaks: Record access violations or unexpected sharing behaviour in Apex-governed objects Enhanced Omni-Channel migration completeMandatory · UrgentStandard Omni-Channel retired June 1. Migrate service channels (Live Agent, SMS, Messenger) first, then enable Enhanced routing. Test agent login and work item routing in sandbox end-to-end.↳ Breaks: Agents cannot log in to Omni-Channel, work items stop routing entirely PDF generation processes tested in sandboxMandatoryLegacy PDF rendering behaviour retired. Any process generating PDFs from Salesforce — Quote PDFs, Visualforce reports, custom PDF output — must be tested in Summer ’26 sandbox.↳ Breaks: Incorrectly formatted or failed PDF generation for customer-facing documents Recommended — should be done; will not immediately break Agentforce agent configurations reviewedRecommendedSummer ’26 changes agent lifecycle defaults. If your org has agents in production, review the Agentforce Summer ’26 release notes and test agent initialisation, session handling, and error surfacing in sandbox. Evaluate Flow Orchestration for existing processesOptional upsideFlow Orchestration is now free in Enterprise, Performance, Unlimited, and Developer editions. Review multi-step approval processes or cross-object coordination workflows that could benefit from rebuilding in Orchestration. Exact production upgrade date confirmedRecommendedSetup → Company Information → Instance. Then trust.salesforce.com to find your exact upgrade weekend. Some instances upgraded May 15 — if yours was in that wave, your production org is already on Summer ’26. The items you should do but that will not break immediately 5. Flow Orchestration is now free Flow Orchestration is included in Enterprise, Performance, Unlimited, and Developer editions without usage limits in Summer ’26. If your org has been avoiding Flow Orchestration due to licensing cost, that barrier is gone. Evaluate whether any current multi-step approval processes or cross-object coordination workflows would benefit from rebuilding in Orchestration. 6. Review Agentforce configurations Summer ’26 changes agent lifecycle defaults for orgs running Agentforce in production. If your org has agents in production — even in early access or limited deployment — review the Summer ’26 Agentforce release notes and test agent behaviour in sandbox before production upgrade. 7. Confirm your exact upgrade date Do not assume June 5 or June 12. Your specific upgrade date depends on your Salesforce instance. Check: Setup → Company Information → Instance field. Then confirm your upgrade date at trust.salesforce.com. Some instances upgraded May 15. If your org is on one of those instances and you are reading this on June 4, your production org may already be on Summer ’26. Summer ’26 is the release where “I’ll check the sandbox later” becomes a problem. The June 5 wave is tomorrow. If your sandbox has been on preview since May 8 and you have not looked at it yet, today is the day. Salesforce Admin Summer ’26 Salesforce Release SAML Upgrade Checklist Share: LinkedIn Twitter / X Copy link In this article —Mandatory items 01SAML migration 02Apex security defaults 03Omni-Channel migration 04PDF generation —Recommended items 05Flow Orchestration free 06Agentforce review 07Confirm your date Upgrade dates May 15First wave — already liveCheck if