# Salesforce: Feature Service Disruption: MCGrowth

> Salesforce revised the start time of the MCGrowth feature service disruption from 2026-10-25 11:00 UTC to 2026-10-25 05:26 UTC, extending the reported impact window. The incident was still open when archived, open for 23 h 7 min at the last update; the evidence provides no impact level, cause or fix

Canonical: https://rewindex.com/company/salesforce/incidents/20004529
Last updated: 2026-10-26T10:50:32Z

- Impact (vendor’s label): minor
- Status: resolved · edited after publishing
- Started: 2026-10-25 05:26 UTC · Resolved: 2026-10-26 03:31 UTC · Duration: 22 h
- Updates: 2 · Affected components: MCGrowth, 33 instances
- [Vendor status page: https://status.salesforce.com/incidents/20004529](https://status.salesforce.com/incidents/20004529)
- [Company: Salesforce](https://rewindex.com/company/salesforce.md)

## Summary

Salesforce revised the start time of the MCGrowth feature service disruption from 2026-10-25 11:00 UTC to 2026-10-25 05:26 UTC, extending the reported impact window. The incident was still open when archived, open for 23 h 7 min at the last update; the evidence provides no impact level, cause or fix. _(machine-written, sol)_
## Timeline of updates

- **update** 2026-10-26 03:39 UTC: Affected Marketing Cloud customers are experiencing HTTP 400 errors and signature verification failures when accessing tracked email links, preventing them from reaching their intended destination URLs. We're investigating the issue and working to determine the full scope of impact. We'll provide an update in 30 minutes or sooner if additional information becomes available.
- **update** 2026-10-26 03:59 UTC: We resolved an issue that caused error messages when customers opened tracked email links in Marketing Cloud. A configuration issue in a recent deployment affected email link redirects. We rolled back the deployment in the affected region and confirmed that email links are redirecting successfully. We apologize for the impact this incident had on our customers and their businesses. We'll complete a full investigation to establish the technical trigger, the underlying cause, and the preventive actions to avoid a repeat.

## Rewindex changes for this incident

- 2026-10-26 04:03 UTC: [Incident updated: Feature Service Disruption: MCGrowth](https://rewindex.com/change/rb329b397777a43.md)
- 2026-10-26 04:33 UTC: [Incident silently edited: Feature Service Disruption: MCGrowth](https://rewindex.com/change/reeb0a1d1ae63ab.md)


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Canonical: https://rewindex.com/company/salesforce/incidents/20004529 · Markdown: https://rewindex.com/company/salesforce/incidents/20004529.md · JSON: https://rewindex.com/api/v1/companies/salesforce/incidents/20004529 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T10:50:32.810Z