Fuji(Testnet) C-Chain Helicon Block Indexing
Affected: Explorer
Avalanche Outage History
Avalanche is up right nowAvalanche had 6 outages in the last 2 years totaling 126h 5m of downtime — averaging 0.2 incidents per month.
There were 6 Avalanche outages since October 14, 2024 totaling 126h 5m of downtime. Each is summarised below — incident details, duration, and resolution information.
AvaCloud new L1 creation issue
Affected: AvaCloud
Timeline · 5 updates
- investigating Nov 22, 2025, 12:16 AM UTC
We are investigating AvaCloud new L1 creation issue. This does not impact any existing L1s.
- identified Nov 22, 2025, 12:48 AM UTC
The cause has been identified as an issue with a third party integration and a fix is being proposed and implemented.
- identified Nov 24, 2025, 02:18 PM UTC
A fix is being tested.
- monitoring Nov 24, 2025, 06:25 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Nov 24, 2025, 08:26 PM UTC
This incident has been resolved.
C-Chain explorer delay
Affected: Explorer
Timeline · 4 updates
- identified Oct 20, 2025, 01:15 PM UTC
Our data processing infrastructure is running behind which is causing delayed ingestion of C-Chain Explorer. Team is working on restoring the service.
- identified Oct 20, 2025, 01:17 PM UTC
We are continuing to work on a fix for this issue.
- monitoring Oct 20, 2025, 01:18 PM UTC
Service has been restored and data is being backfilled. We are continuing to monitor the recovery.
- resolved Oct 20, 2025, 02:52 PM UTC
Data has been backfilled, the explorer is now up fully up to date.
AvaCloud instability
Affected: AvaCloud
Timeline · 4 updates
- identified Mar 26, 2025, 12:48 AM UTC
We have identified the cause of the incident and are actively working on it.
- monitoring Mar 26, 2025, 01:39 AM UTC
Fixes have been put in places and we are actively monitoring.
- monitoring Mar 26, 2025, 01:41 AM UTC
We are continuing to monitor for any further issues.
- resolved Mar 26, 2025, 03:31 AM UTC
This incident has been resolved.
Fuji Testnet Instability
Affected: Fuji Testnet Primary Network
Timeline · 6 updates
- investigating Mar 05, 2025, 11:38 PM UTC
We are aware of instability on the Fuji testnet and are currently investigating the root cause. No Avalanche Mainnet nodes or services are impacted.
- investigating Mar 05, 2025, 11:42 PM UTC
We are continuing to investigate this issue.
- investigating Mar 06, 2025, 03:05 AM UTC
We are continuing to investigate the issue. Blocks continue to be accepted on Fuji blockchains. Fuji node operators should not update or restart nodes for the time being until the issue is identified. No Avalanche Mainnet nodes or services are impacted.
- identified Mar 06, 2025, 06:22 PM UTC
We've identified issues affecting Fuji nodes and are implementing a fix that will be released in a new AvalancheGo version. Blocks continue to be accepted on Fuji blockchains. Fuji node operators should not update or restart nodes for the time being until the fix version is released. The new release will be posted here once available. No Avalanche Mainnet nodes or services are impacted.
- monitoring Mar 06, 2025, 09:44 PM UTC
AvalancheGo v1.13.0-fuji has been release, which should fix any instability issues observed by Fuji testnet nodes. https://github.com/ava-labs/avalanchego/releases/tag/v1.13.0-fuji Node operators are encouraged to update as soon as possible. We are continuing to monitor the Fuji network performance.
- resolved Mar 07, 2025, 05:29 PM UTC
The issue causing instability of Fuji nodes has been resolved with the latest AvalancheGo release. This release also schedules the Fortuna network upgrade to activate at 11:00 AM ET on Thursday, March 13th. All Fuji node operators should update their nodes prior to the activation time. https://github.com/ava-labs/avalanchego/releases/tag/v1.13.0-fuji
P-Chain Transaction Processing Delays
Affected: Mainnet Primary Network
Timeline · 2 updates
- monitoring Dec 17, 2024, 02:47 PM UTC
For the past few hours, transactions issued on the Avalanche P-Chain experienced delays due to improper P-Chain transaction mempool handling. A fix has been identified and improved acceptance times are being observed. Valid transactions issued during this time should now be included in blocks. If any transactions were dropped from the mempool, they can be safely re-issued. The Avalanche X- and C-Chains, and Avalanche L1s are not impacted.
- resolved Dec 17, 2024, 11:27 PM UTC
P-Chain transactions are being accepted as expected. Primary Network Validator nodes are encouraged to upgrade to the latest AvalancheGo release (linked below) to leverage the latest P-Chain mempool handling improvements. https://github.com/ava-labs/avalanchego/releases/tag/v1.12.1