# Salesforce: Major incident: Service Disruption: Core Service

> Salesforce reported a major Core Service disruption affecting 1 instance that prevented users from logging in, from 2026-10-23 01:25 UTC to 2026-10-23 07:38 UTC (6 h 13 min). A recent release prevented login sessions from being created; Salesforce deployed a fix forward and restored access to users’

Canonical: https://rewindex.com/change/i50b60a6321feb1
Last updated: 2026-10-23T08:33:00Z

**Summary:** Salesforce reported a major Core Service disruption affecting 1 instance that prevented users from logging in, from 2026-10-23 01:25 UTC to 2026-10-23 07:38 UTC (6 h 13 min). A recent release prevented login sessions from being created; Salesforce deployed a fix forward and restored access to users’ orgs. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-10-23 01:25 UTC · Detected: 2026-10-23 08:33 UTC
- [Source: https://status.salesforce.com/incidents/20004523](https://status.salesforce.com/incidents/20004523)
- [Company: Salesforce](https://rewindex.com/company/salesforce.md)
- Versions: before (none: first archived) → after incident\_version:130/20004523@e47affb74fea
- Change 1 of 1 for this incident

Incident page (full timeline): [Service Disruption: Core Service](https://rewindex.com/company/salesforce/incidents/20004523.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
+ 2026-10-23 07:38 UTC
```

**6. Added: Affected components**

```diff
+ 1 instance, Core Service
```

**7. Added: Update** (update) · 2026-10-23 08:12 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 |

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 1).

- Canonical URL: https://rewindex.com/change/i50b60a6321feb1
- Citation: Salesforce, “Major incident: Service Disruption: Core Service” (2026-10-23 01:25 UTC). Archived by Rewindex: https://rewindex.com/change/i50b60a6321feb1 (CC BY 4.0).
- Markdown link: `[Salesforce: Major incident: Service Disruption: Core Service (2026-10-23)](https://rewindex.com/change/i50b60a6321feb1)`


---
Canonical: https://rewindex.com/change/i50b60a6321feb1 · Markdown: https://rewindex.com/change/i50b60a6321feb1.md · JSON: https://rewindex.com/api/v1/changes/i50b60a6321feb1 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T15:19:40.993Z