# Feature Management & Experimentation (FME) user interface unavailable

- Provider: [Harness](https://down.guide/providers/harness)
- Confidence: Confirmed
- Impact: Partial outage
- lasted 16m
- started 2026-08-24 00:57 UTC
- FME
- id: DWN-b11a50118d
- Official page: https://stspg.io/jf7z6c8ycf22

## Root cause
> Summary \* Starting at 23:42 UTC on August 23, 2026, several FME customers reported failures loading the FME UI. \* FME UI Artifacts served from the CDN expired due to a retention policy, causing FME UI to fail to load. \* Any flag request changes through the API, change delivery, and the data pipeline continued to work with no interruption.

[Postmortem](https://stspg.io/jf7z6c8ycf22)

## Updates from Harness
### 2026-08-24 00:57 UTC: investigating
We are currently investigating this issue.

### 2026-08-24 01:01 UTC: investigating
We are currently investigating reports that the Feature Management & Experimentation (FME) user interface is failing to load. Customers attempting to access the FME console may encounter errors or unresponsive pages. Feature flag evaluation and SDK traffic are not believed to be affected. A further update will follow shortly.

### 2026-08-24 01:08 UTC: monitoring
A fix has been implemented and we are monitoring the results.

### 2026-08-24 01:12 UTC: resolved
This incident has been resolved.

### 2026-08-27 23:36 UTC: postmortem
Summary
\* Starting at 23:42 UTC on August 23, 2026, several FME customers reported failures loading the FME UI.
\* FME UI Artifacts served from the CDN expired due to a retention policy, causing FME UI to fail to load.
\* Any flag request changes through the API, change delivery, and the data pipeline continued to work with no interruption.
Root Cause
\* The FME UI is served from a CDN. The UI artifacts got evicted due to a retention policy, causing the UI to fail to load for all users.
Impact
\* The FME UI was unable to load for all users across all production environments.
What was not impacted?
\* SDK functionality and runtime flag evaluation
\* Admin API calls
\* Customer flag configuration data
\* No data loss occurred
Remediation
\* FME UI got restored in the CDN through a deployment
\* Recovery confirmed across all production environments before closing the incident.
Action Items
\* Improve the asset retention policy so that the currently active version is never subject to eviction.

From the builder: does your app depend on Harness? [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=harness) detects problems in your own logs without hand-written monitors, and you can ask it in plain language which errors mention Harness.

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=DWN-b11a50118d), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.