Salesforce: Marketing Cloud Degradation: Marketing Cloud Core Service
Affected components: Marketing Cloud Core Service3 instances
Timeline of updates
- update
We are investigating an issue affecting a subset of customers when trying to send SMS and email messages through our transactional messaging API. Some requests may intermittently fail with a server error, though retries are generally successful.
We'll provide an update in 30 minutes or sooner if additional information becomes available.
- update
We identified three affected system components that were not receiving traffic and were returning errors. We removed the affected components, and service has been fully restored.
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 the impact to you and your business. We will fully investigate the trigger and root cause, and put preventive action in place.
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves this record existed by then and has not been changed since, by anyone, Rewindex included.
How the archive is checked, and what it cannot prove.
First version captured
In the 2026-10-18 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
2b7108836416b9f4…
Impact, status and times are the vendor’s own, as last archived. View on status.salesforce.com (opens in new tab).
Cite this
Status incident (vendor impact label: minor) posted by Salesforce, started 2026-08-27 01:44 UTC, resolved after 8.0 h, 2 update(s).
- Title
- Marketing Cloud Degradation: Marketing Cloud Core Service
- Vendor
- Salesforce
- Date
- URL
- https://rewindex.com/company/salesforce/incidents/20004379
Salesforce profileRecent Salesforce incidentsAll outages on August 27, 2026Salesforce in August 2026MarkdownJSON