# Salesforce: Feature Perf Degradation: Core Service

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-08-29 00:45 UTC · Resolved: 2026-09-02 18:06 UTC · Duration: 5 d
- Updates: 3 · Affected components: Core Service, 227 instances
- [Vendor status page: https://status.salesforce.com/incidents/20004393](https://status.salesforce.com/incidents/20004393)
- [Company: Salesforce](https://rewindex.com/company/salesforce.md)

## Timeline of updates

- **update** 2026-09-02 17:52 UTC: Upon further investigation, we've determined that the start time of impact is different than initially understood. We've revised the start time of the Trust post to more accurately reflect the time customers may have begun to experience impact. We apologize for any confusion caused by this.
- **update** 2026-09-02 18:02 UTC: We're investigating an issue affecting a subset of sandbox and production environments where users may experience their sessions expiring shortly after signing in, requiring them to authenticate again. We've identified a recent change that may be contributing to the issue and are deploying a configuration change to mitigate the impact. We're monitoring the rollout and validating recovery. We'll provide an update in 30 minutes or sooner as more information becomes available.
- **update** 2026-09-02 18:29 UTC: We’ve resolved the issue affecting a subset of sandbox and production environments where users experienced their sessions expiring shortly after signing in, requiring them to authenticate again. We deployed a configuration change to the affected environments, and monitoring confirms the unexpected session behavior has stopped. We apologize for how this incident affected you and your business. We will thoroughly investigate the incident, confirming the technical trigger, the underlying cause, and preventive actions to avoid a repeat in the future.


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Canonical: https://rewindex.com/company/salesforce/incidents/20004393 · Markdown: https://rewindex.com/company/salesforce/incidents/20004393.md · JSON: https://rewindex.com/api/v1/companies/salesforce/incidents/20004393 · Generated 2026-10-18T10:29:37.331Z