QuickNode experienced a notice incident on August 18, 2026 affecting Base - Sepolia and Sepolia - WebSocket API and 1 more component, lasting 4d 20h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Aug 18, 2026, 01:42 AM UTC
The Quicknode team is investigating degraded performance of Base Sepolia in FRA region. We will follow up once we have more updates.
- monitoring Aug 18, 2026, 01:45 AM UTC
A fix has been implemented and we are monitoring the results.
- investigating Aug 18, 2026, 06:08 PM UTC
The Quicknode team is investigating degraded performance of Base Sepolia. Users may observe 503 responses from their requests. We will follow up once we have more updates.
- identified Aug 19, 2026, 06:32 AM UTC
Customers may experience higher error rates, including 503 responses. We are in active communication with the Foundation and waiting for a new release to mitigate this. Further updates will be provided as the situation develops.
- investigating Aug 19, 2026, 09:52 AM UTC
The Quicknode team is investigating the degraded performance of Base Sepolia - we will update this page as we acquire new information.
- identified Aug 21, 2026, 05:46 PM UTC
Our team is actively listening to updates from the Base team regarding Base Sepolia degradation. A fix has been identified and is being implemented by the Base team for the Base node client. We will update this page as we receive further updates.
- resolved Aug 23, 2026, 02:10 PM UTC
The issue has been resolved and Base Sepolia services are operating normally.