Multiple Regions - Multiple UiPath Services - Degraded Performance

Final update

## Customer impact Between October 1, 2026 at 03:00 UTC and October 1, 2026 at 04:10 UTC, a subset of customers experienced intermittent failures when using AI-powered features, including Context Grounding, Agent Builder and Agents, Autopilot for Developers, generative AI activities, and Communications Mining. Impact affected requests served by or routed through our Europe AI services infrastructure. Affected regions include UAE, Korea, Switzerland, UK, India, Singapore, Australia and Europe. Customers saw failed requests, including service-unavailable errors. Failures were concentrated during two periods 03:00 UTC to 03:45 UTC and 04:00 UTC to 04:08 UTC for a total incident window of approximately 1 hour and 10 minutes. ## Root cause A single image-processing workload sent a large batch of requests with very large image payloads to our Europe AI services infrastructure. Those oversized request bodies caused service instances to exhaust available memory, become unresponsive, and restart. As healthy capacity dropped, our systems returned service-unavailable errors for customer traffic. When traffic was automatically rerouted to a second Europe location, the same failure pattern occu

1. Postmortem · Oct 6, 14:35 UTC
   ## Customer impact Between October 1, 2026 at 03:00 UTC and October 1, 2026 at 04:10 UTC, a subset of customers experienced intermittent failures when using AI-powered features, including Context Grounding, Agent Builder and Agents, Autopilot for Developers, generative AI activities, and Communications Mining. Impact affected requests served by or routed through our Europe AI services infrastructure. Affected regions include UAE, Korea, Switzerland, UK, India, Singapore, Australia and Europe. Customers saw failed requests, including service-unavailable errors. Failures were concentrated during two periods 03:00 UTC to 03:45 UTC and 04:00 UTC to 04:08 UTC for a total incident window of approximately 1 hour and 10 minutes. ## Root cause A single image-processing workload sent a large batch of requests with very large image payloads to our Europe AI services infrastructure. Those oversized request bodies caused service instances to exhaust available memory, become unresponsive, and restart. As healthy capacity dropped, our systems returned service-unavailable errors for customer traffic. When traffic was automatically rerouted to a second Europe location, the same failure pattern occurred because both locations received the same oversized workload. ## Detection Our monitoring systems generated multiple concurrent alerts shortly after failures began at approximately 03:00 UTC. During the initial investigation, our engineering team confirmed that Europe AI service failures were ca
2. Resolved · Oct 1, 07:48 UTC
   The issue has been resolved, and services are operating normally. We apologize for any inconvenience this may have caused.
3. Monitoring · Oct 1, 06:28 UTC
   We continue to monitor the results of the implemented fix to ensure the issue is fully resolved.
4. Monitoring · Oct 1, 05:42 UTC
   A fix has been implemented, and our team is actively monitoring the results to confirm the issue is fully resolved.
5. Investigating · Oct 1, 04:12 UTC
   We are investigating degraded performance impacting UiPath Service from LLM Gateway in Multiple Regions. Our teams are working to identify the cause and we will share more details as the investigation progresses.