# 2025-October-28 Service Incident

- Provider: [Sauce Labs](https://down.guide/saucelabs)
- Level: confirmed
- Impact: Partial outage
- lasted 1h 29m
- started 2025-10-28 12:53 UTC
- EU-Central, EU-Central
- eu, eu-central-1
- id: DWN-e7d8f43f37
- Official page: https://stspg.io/hkxwg4q3vy8g

## Updates from Sauce Labs
### 2025-10-28 12:53 UTC: investigating
We are currently seeing elevated error rates for browser tests running on Windows 8 & 10 in the EU-Central-1, we are currently investigating.

### 2025-10-28 14:22 UTC: resolved
After taking remedial action, Windows browser tests are now running normally, this incident is resolved.

### 2025-11-06 16:00 UTC: postmortem
### \*\*Dates:\*\*
Tuesday, October 28th 2025, 11:40 UTC - 14:05 UTC.
### \*\*What happened:\*\*
Windows based tests in the EU data center were failing on startup which led to a decrease in availability of Windows-based Virtual Machines.
### \*\*Why it happened:\*\*
A product defect was introduced which caused an issue with starting Windows-based VMs. 
### \*\*How we fixed it:\*\*
The deployment was rolled back to a stable version.
### \*\*What we are doing to prevent it from happening again:\*\*
We have improved monitoring & alerting and enhanced our post-deployment validation.

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