# Salesforce: Major incident: Service Disruption: Core Service

> Salesforce reported a major Core Service disruption across 16 instances starting 2026-10-23 01:25 UTC, resolved at 2026-10-25 05:33 UTC after 2 days 4 h. A recent release prevented login sessions from being created; Salesforce deployed a fix forward and stated that users could log in and open their

Canonical: https://rewindex.com/change/iee63b99267e2e6
Last updated: 2026-10-23T06:03:00Z

**Summary:** Salesforce reported a major Core Service disruption across 16 instances starting 2026-10-23 01:25 UTC, resolved at 2026-10-25 05:33 UTC after 2 days 4 h. A recent release prevented login sessions from being created; Salesforce deployed a fix forward and stated that users could log in and open their orgs again. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-10-23 01:25 UTC · Detected: 2026-10-23 06:03 UTC
- [Source: https://status.salesforce.com/incidents/20004518](https://status.salesforce.com/incidents/20004518)
- [Company: Salesforce](https://rewindex.com/company/salesforce.md)
- Versions: before (none: first archived) → after incident\_version:130/20004518@2d42c25b70fa
- Change 1 of 2 for this incident

Incident page (full timeline): [Service Disruption: Core Service](https://rewindex.com/company/salesforce/incidents/20004518.md)
## What changed

**1. Added: Title**

```diff
+ Service Disruption: Core Service
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-23 01:25 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-25 05:33 UTC
```

**6. Added: Affected components**

```diff
+ 16 instances, Core Service
```

**7. Added: Update** (update) · 2026-10-23 05:56 UTC

```diff
+ We resolved an issue that prevented users from logging in. We identified an issue with a recent release that prevented login sessions from being created. We deployed a fix forward, and access is now restored. Users can log in and open their orgs again.  We apologize for how this incident affected you and your business. We will undertake a full investigation of the incident, establishing the technical trigger, the underlying cause, and preventive action to avoid a repeat in the future. 
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-23 01:25 UTC | Major incident: Service Disruption: Core Service (this change) | outage |
| 2026-10-23 08:33 UTC | [Incident updated: Service Disruption: Core Service](https://rewindex.com/change/r39efda916cd310.md) | Rewrite: duration shortened |

Next: [change](https://rewindex.com/change/r39efda916cd310.md) · 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: Core Service on Salesforce’s status page, changed 2026-10-23 01:25 UTC (change 1 of 2).

- Canonical URL: https://rewindex.com/change/iee63b99267e2e6
- Citation: Salesforce, “Major incident: Service Disruption: Core Service” (2026-10-23 01:25 UTC). Archived by Rewindex: https://rewindex.com/change/iee63b99267e2e6 (CC BY 4.0).
- Markdown link: `[Salesforce: Major incident: Service Disruption: Core Service (2026-10-23)](https://rewindex.com/change/iee63b99267e2e6)`


---
Canonical: https://rewindex.com/change/iee63b99267e2e6 · Markdown: https://rewindex.com/change/iee63b99267e2e6.md · JSON: https://rewindex.com/api/v1/changes/iee63b99267e2e6 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T17:15:23.580Z