# Salesforce: Major incident: Service Disruption: Marketing Cloud Core Service, Marketing Cloud Login

> Major incident: Service Disruption: Marketing Cloud Core Service, Marketing Cloud Login. Detected 2026-10-20 by Rewindex: what changed on Salesforce’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/i4f1b2a08886cc5
Last updated: 2026-10-20T15:33:00Z

**Summary:** _summary pending_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-10-20 13:33 UTC · Detected: 2026-10-20 15:33 UTC
- [Source: https://status.salesforce.com/incidents/20004504](https://status.salesforce.com/incidents/20004504)
- [Company: Salesforce](https://rewindex.com/company/salesforce.md)
- Versions: before (none: first archived) → after incident\_version:130/20004504@090cfa5ef26c
- Change 1 of 1 for this incident

Incident page (full timeline): [Service Disruption: Marketing Cloud Core Service, Marketing Cloud Login](https://rewindex.com/company/salesforce/incidents/20004504.md)
## What changed

**1. Added: Title**

```diff
+ Service Disruption: Marketing Cloud Core Service, Marketing Cloud Login
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-20 13:33 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-20 14:10 UTC
```

**6. Added: Affected components**

```diff
+ 26 instances, Marketing Cloud Core Service, Marketing Cloud Login
```

**7. Added: Update** (update) · 2026-10-20 15:15 UTC

```diff
+ Marketing Cloud Engagement customers on the affected databases experienced a service disruption that prevented logins and access to features requiring database connectivity. We restarted the affected database servers to restore service, validated recovery, and rebalanced the databases to maintain stability We apologize for the impact this incident may have had on your customers and their businesses. We’ill complete a full investigation to confirm the technical trigger and underlying cause, and to identify actions that prevent a recurrence. 
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-20 13:33 UTC | Major incident: Service Disruption: Marketing Cloud Core Service, Marketing Cloud Login (this change) | outage |

All Salesforce changes: [timeline](https://rewindex.com/company/salesforce/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._

## Cite this

Major incident: Service Disruption: Marketing Cloud Core Service, Marketing Cloud Login on Salesforce’s status page, changed 2026-10-20 13:33 UTC (change 1 of 1).

- Canonical URL: https://rewindex.com/change/i4f1b2a08886cc5
- Citation: Salesforce, “Major incident: Service Disruption: Marketing Cloud Core Service, Marketing Cloud Login” (2026-10-20 13:33 UTC). Archived by Rewindex: https://rewindex.com/change/i4f1b2a08886cc5 (CC BY 4.0).
- Markdown link: `[Salesforce: Major incident: Service Disruption: Marketing Cloud Core Service, Marketing Cloud Login (2026-10-20)](https://rewindex.com/change/i4f1b2a08886cc5)`


---
Canonical: https://rewindex.com/change/i4f1b2a08886cc5 · Markdown: https://rewindex.com/change/i4f1b2a08886cc5.md · JSON: https://rewindex.com/api/v1/changes/i4f1b2a08886cc5 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T16:33:22.160Z