Outage in Cloudflare Workers

Increased 1003 / 403 errors in Workers

Resolved Minor

April 01, 2026 - Started about 19 hours ago - Lasted about 8 hours
Official incident page

Incident Report

Summary AI Generated

Cloudflare Workers experienced an issue causing 1003/403 errors when Workers performed fetch() calls, affecting some Workers invocations and Cloudflare Sites and Services. The problem was identified after approximately 23 minutes of investigation, and a fix was implemented and rolled out to most customers within about 2.5 hours, with continued rollout for remaining affected customers. The incident lasted 7.8 hours total before full resolution.

Cloudflare is aware of and investigating an issue impacting some Workers invocations. Customers may be seeing 1003/403 errors when doing fetch() calls inside a Worker. We are working to mitigate this problem. More updates to follow shortly.

Components affected

Cloudflare Workers Cloudflare Sites and Services Cloudflare Workers Workers

Latest Updates ( sorted recent to last )

MONITORING about 17 hours ago - at 04/02/2026 03:18AM

A fix has been implemented for most customers, we're continuing to rollout a fix for the rest

IDENTIFIED about 19 hours ago - at 04/02/2026 01:10AM

The issue has been identified and a fix is being implemented.

INVESTIGATING about 19 hours ago - at 04/02/2026 12:47AM

Cloudflare is aware of and investigating an issue impacting some Workers invocations. Customers may be seeing 1003/403 errors when doing fetch() calls inside a Worker.

We are working to mitigate this problem. More updates to follow shortly.

Latest Cloudflare Workers outages

Cloudflare Workers Issues in Chicago - about 12 hours ago

Cloudflare Workers AI Issues - 8 days ago

Cloudflare API service issues - 9 days ago

Workers API increased latency - 10 days ago

Cloudflare Pages API is seeing increased error rate. - 14 days ago

Never miss outages in third-party dependencies

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 6020 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook