AI Risk Wire

Cases › operational mistake › LR-2026-0603

Google Gemini global outage exceeds seven hours

Preliminary Why: Only a republished copy: BigGo Finance · subject to change

Status: action reported, no fix

Severity moderate
Reported 11 Jun 2026
Developer and model Google · Gemini

No source states: loss or records, agent tool, could do, deployer, industry.

Severity moderate: test met: users of others were affected with a bounded scope stated, as identical malfunctions were confirmed in at least nine countries

Google's generative AI service Gemini became unresponsive worldwide on June 10, 2026. During the outage, prompt submissions failed across the web version, mobile app and Chrome extension, for both free and paid accounts, and users consistently saw Error 1076 or Error 1099 messages. The disruption began in the U.S. and U.K. before spreading to Europe and Asia, with identical malfunctions reported as confirmed in at least nine countries. Google's Workspace Dashboard reportedly kept showing a normal status during the initial hours of reports, and Google's own monitoring lagged behind user reports. The disruption persisted for approximately seven hours before Google declared resolution. In a subsequent investigation, Google attributed the root cause to a backend database performance issue.

What happened

1 · What went wrongGemini became unresponsive worldwide from 3:26 a.m. Pacific Time on June 10, and prompt submissions failed on web, mobile and Chrome extension for free and paid accounts.

What was done

The disruption lasted approximately seven hours, and Google declared resolution at 10:30 a.m. Pacific Time on June 10.

Risks

Sorted by rule from the case's fields; not yet read from the sources.

Controls

Not yet read for controls. Controls that mitigate the primary risk:

Harness

Tool allow-list · Fail-closed defaults · Stop control

Application

Human approval for high-impact actions · Change review and separation of duties · Least-privilege access for the agent · Production kept apart from test · Activity logs · Adversarial testing before deployment

Infrastructure / target

Backups and recovery

Similar incidents

All cases of this kind ›

Evidence

No source states: what the AI was doing, what it reached or did, how it was caught, when it was found, how many records were exposed, the direct loss, a count of the other parties affected, any court case, what set it off.

Show the full account: 5 items from the primary sources

What happened, in order

  1. 2026-06-08 Apple unveiled Siri AI at WWDC 2026, two days before the outage.
  2. 2026-06-10 The outage began at 3:26 a.m. Pacific Time, making Gemini unresponsive worldwide.
  3. 2026-06-10 Google declared resolution at 10:30 a.m. Pacific Time.

Not dated in the sources:

  • Google officially opened an incident report during the outage.
  • In a subsequent investigation, Google attributed the root cause to a backend database performance issue.
Show every field, with its source and grade

The AI system

Model
Gemini
C one secondary source states it
Developer
Google
C one secondary source states it

What happened

Earliest source we hold
2026-06-11
D inferred by us from the described behaviour, reason shown
How long it lasted
PT7H
C one secondary source states it
Cause
a shared system was the path
C one secondary source states it
Cause in detail
Google attributed the root cause to a backend database performance issue
C one secondary source states it
What went wrong
operational mistake
D inferred by us from the described behaviour, reason shown

Impact

Severity
moderate
D inferred by us from the described behaviour, reason shown
Who was affected
A broad range of users, including students, developers, and enterprise customers who have integrated Gemini into their workflows
C one secondary source states it
Why this severity
test met: users of others were affected with a bounded scope stated, as identical malfunctions were confirmed in at least nine countries
D inferred by us from the described behaviour, reason shown

Notes on gaps

The 2026-06-11 article date was not used as a disclosure date. The Apple Siri AI items are context only and did not involve the outage's systems according to the source.

LR-2026-0603 · version 1 · published 2026-11-01 after automatic checks; not yet checked field by field by a person · JSON