Avalanche incident

Fuji(Testnet) C-Chain Helicon Block Indexing

Major Resolved View vendor source →

Avalanche experienced a major incident on July 28, 2026 affecting Explorer, lasting 2h 4m. The incident has been resolved; the full update timeline is below.

Started
Jul 28, 2026, 03:09 PM UTC
Resolved
Jul 28, 2026, 05:13 PM UTC
Duration
2h 4m
Detected by Pingoru
Jul 28, 2026, 03:09 PM UTC

Affected components

Explorer

Update timeline

  1. investigating Jul 28, 2026, 03:09 PM UTC

    We are currently investigating delayed C-Chain block indexing after the Helicon activation.

  2. investigating Jul 28, 2026, 03:10 PM UTC

    We are continuing to investigate this issue.

  3. investigating Jul 28, 2026, 03:31 PM UTC

    We are continuing to investigate this issue.

  4. investigating Jul 28, 2026, 03:46 PM UTC

    We are continuing to investigate this issue impacting Fuji(Testnet) C-Chain block ingestion.

  5. investigating Jul 28, 2026, 03:51 PM UTC

    We are continuing to investigate this issue.

  6. investigating Jul 28, 2026, 03:52 PM UTC

    We are continuing to investigate this issue.

  7. identified Jul 28, 2026, 04:08 PM UTC

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

  8. monitoring Jul 28, 2026, 04:34 PM UTC

    A fix has been implemented and we are monitoring the results.

  9. resolved Jul 28, 2026, 05:13 PM UTC

    This incident has been resolved.