Flow Mainnet Network Issue
Affected: Block Sealing
Flow Swiss Outage History
Flow Swiss is up right nowFlow Swiss had 21 outages in the last 2 years totaling 136h 38m of downtime — averaging 0.9 incidents per month.
There were 21 Flow Swiss outages since June 13, 2024 totaling 136h 38m of downtime. Each is summarised below — incident details, duration, and resolution information.
Flow Testnet Network Issue
Affected: Flow Testnet
Timeline · 4 updates
Transaction ingestion is degraded
Affected: Flow Testnet
Timeline · 2 updates
- investigating Jan 28, 2026, 07:36 PM UTC
Transaction ingestion is currently degraded. Testnet is also in the Epoch Fallback Mode.
- resolved Jan 28, 2026, 07:59 PM UTC
The incident has been resolved and transactions ingestion has recovered. Testnet will also automatically recover from the Epoch Fallback Mode (thanks to Epoch Fallback Recover mechanism introduced last year - https://github.com/onflow/flow-go/releases/tag/v0.39.0)
Degraded Performance on Testnet and Mainnet EVM Endpoints
Affected: Flow TestnetEVM Gateway
Timeline · 2 updates
- investigating Jan 07, 2026, 04:38 PM UTC
The public EVM endpoint is currently experiencing degraded performance. We’re working with our partners to restore normal service. This is both on Testnet and Mainnet.
- resolved Jan 07, 2026, 05:48 PM UTC
This incident has been resolved.
Transactions are not being ingested
Affected: Collection Finalization
Timeline · 3 updates
- investigating Dec 27, 2025, 01:15 PM UTC
The chain is currently experiencing an issue. We are investigating and will provide updates as they become available.
- identified Dec 27, 2025, 04:39 PM UTC
The Flow Foundation is currently investigating a potential security incident affecting the Flow network. Validators have worked together to halt transaction ingestion (the network won't be processing new transactions for the duration of the halt.) Flow Foundation is actively collaborating with network partners and relevant authorities to address the issue as quickly as possible. Please stay tuned for timely ongoing updates.
- resolved Dec 28, 2025, 03:28 AM UTC
The root cause of the issue has been resolved and the network has been upgraded. See maintenance incident: https://manage.statuspage.io/pages/ytw5bdg6zr13/incidents. However, the collection ingestion is still paused.
EVM Endpoint Degraded / Not Responding
Affected: EVM Gateway
Timeline · 5 updates
Sealing & Finalization halted on Testnet
Affected: Flow Testnet
Timeline · 2 updates
- resolved Jul 10, 2025, 07:10 PM UTC
The issue has been resolved and the network has fully recovered. Please note that this incident impacted Testnet only — Mainnet remained unaffected and continues to operate normally.
- postmortem Jul 11, 2025, 11:23 PM UTC
## **Postmortem: Testnet Sealing and Finalization Interruption – July 10, 2025** **Summary** On July 10, 2025, from 11:02 AM to 11:22 AM PST, Testnet experienced a temporary halt in block sealing and finalization. The issue was identified and resolved within 20 minutes. Mainnet remained fully operational and was not affected at any point. **Root Cause** An internal testing framework inadvertently interfered with Testnet node communications, resulting in a disruption to the consensus process. This occurred due to overlapping configurations between the testing environment and Testnet. **Resolution and Preventative Measures** To ensure this does not happen again: * Firewall rules have been updated to sandbox the internal testing framework, fully isolating it from Testnet environments. * The testing framework has also been modified to avoid any attempts to connect to or interact with the Testnet network. Thank you, Flow Team
Flow Mainnet and Testnet Operational
Affected: Flow TestnetCollection FinalizationGRPC APIBlock FinalizationGRPC Web APITransaction ExecutionREST APIBlock SealingEVM Gateway
Timeline · 2 updates
- monitoring Jun 12, 2025, 07:36 PM UTC
The Flow mainnet and testnet are functioning normally. However, we are currently monitoring a Google Cloud outage that may impact some API endpoints and third-party integrations. While core network operations are unaffected, services relying on Google-hosted components may experience intermittent issues or degraded performance. We will continue to monitor the situation closely and provide updates as more information becomes available. Thank you for your patience.
- resolved Jun 12, 2025, 11:31 PM UTC
The Google Cloud outage has now been resolved. We can confirm that there was no impact on Flow mainnet or testnet during this period. All systems remain fully operational. Thank you for your understanding.
Testnet Execution is down
Affected: Flow Testnet
Timeline · 4 updates
Metamask Wallet Issue
Timeline · 2 updates
- investigating Apr 30, 2025, 11:11 PM UTC
Metamask is currently experiencing issues on Flow EVM, causing their wallet transactions to fail. The Flow team is actively working to resolve the issue. In the meantime, the Flow EVM network and all other wallets, such as Flow Wallet, continue to operate normally.
- resolved May 01, 2025, 01:05 AM UTC
This incident has now been resolved, and Metamask transactions on Flow EVM are now working normally.
Testnet Finalization Issue
Affected: Flow Testnet
Timeline · 3 updates
- investigating Apr 08, 2025, 03:13 PM UTC
We are currently investigating this issue.
- identified Apr 08, 2025, 03:25 PM UTC
A fix has been rolled out and we are monitoring recovery
- resolved Apr 08, 2025, 03:43 PM UTC
This incident has been resolved.
Flow Mainnet Experiencing Degraded Performance
Affected: Block Finalization
Timeline · 3 updates
- investigating Mar 13, 2025, 04:55 AM UTC
We are currently observing a lower-than-usual block finalization rate (blocks/second) on Flow mainnet. As a result, users may experience increased time to finalization and time to seal for their transactions. We are investigating the issue, and we will provide updates as we gather more information.
- monitoring Mar 13, 2025, 05:40 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Mar 14, 2025, 05:01 AM UTC
This incident has been resolved.
We are testing the Epoch Fallback Mode recovery on Testnet
Affected: Flow Testnet
Timeline · 2 updates
- investigating Mar 06, 2025, 09:23 PM UTC
Hello, Testnet is currently in the Epoch Fallback mode and epoch transitions are paused. Staking operations will not take effect till the network resumes regular epoch transition. Everything else on testnet is working as expected. This is part of the testing of the new Epoch Fallback Mode recovery process. Thank you.
- resolved Mar 08, 2025, 12:56 AM UTC
The test of the Epoch Fallback Mode recovery process was successful. Flow testnet has now automatically come out of the Epoch Fallback Mode without incurring any downtime. Staking operation on testnet have resumed.
Testnet EVM Gateway Unavailable
Affected: Flow Testnet
Timeline · 3 updates
- investigating Mar 05, 2025, 05:37 PM UTC
We are currently investigating this issue.
- investigating Mar 05, 2025, 05:40 PM UTC
We have rolled out a fix and are monitoring recovery.
- resolved Mar 05, 2025, 06:02 PM UTC
This incident has been resolved.
Flow mainnet networking issue
Affected: Collection FinalizationGRPC APIBlock FinalizationGRPC Web APITransaction ExecutionREST APIBlock SealingEVM Gateway
Timeline · 4 updates
- investigating Oct 31, 2024, 04:10 AM UTC
Flow mainnet is currently experiencing a networking issue. We are working on resolving it.
- investigating Oct 31, 2024, 05:00 AM UTC
We are continuing to investigate this issue.
- monitoring Oct 31, 2024, 05:34 AM UTC
A fix has been implemented and we are monitoring the results.
- resolved Oct 31, 2024, 06:03 AM UTC
This incident has been resolved.
EVM Gateway APIs Unavailable
Affected: EVM Gateway
Timeline · 3 updates
- identified Sep 12, 2024, 02:55 PM UTC
We have identified an issue with the EVM GWs, and we are working to implement a fix to recover the APIs.
- monitoring Sep 12, 2024, 03:05 PM UTC
We have made changes to bring the EVM Gateway back online. We are now monitoring as it catches up.
- resolved Sep 12, 2024, 03:27 PM UTC
We have resolved the issue and confirmed the availability of the EVM GW
EVM Gateway is in a crash loop
Affected: EVM Gateway
Timeline · 4 updates
- identified Sep 11, 2024, 05:20 PM UTC
The Flow EVM Gateway is currently in a crash loop. The issue has been identified.
- identified Sep 11, 2024, 07:07 PM UTC
We have tested the fix, working on deploying it.
- monitoring Sep 11, 2024, 07:31 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Sep 11, 2024, 08:09 PM UTC
This incident has been resolved.
Deleting "Flow Mainnet (depcreated -please 'Flow mainnet..)" and "Flow Crescendo (Preview)" from the status page
Timeline · 1 update
- resolved Sep 06, 2024, 05:53 PM UTC
This is not an incident. This is only to notify that the following two entries will be deleted from the Flow status page (https://status.onflow.org/): 1. Flow Mainnet (deprecated - please use 'Flow mainnet core components' and 'Flow mainnet Access APIs' instead) - Please subscribe to Flow mainnet core components and Flow mainnet Access APIs instead if you haven't already. 2. Flow Crescendo (Preview) - This network is being shut down as Crescendo is now live on mainnet. Thank you, Flow Foundation
Flow Mainnet Transaction execution has stopped
Affected: Transaction Execution
Timeline · 4 updates
- investigating Sep 05, 2024, 09:46 AM UTC
Flow Mainnet network is currently not processing transactions. The Flow core team is investigating.
- monitoring Sep 05, 2024, 07:30 PM UTC
The performance issues have been resolved and collection nodes have recovered. Developers are encouraged to use the next 20-30 minutes to test their apps and ensure there are no problems ahead of our next update.
- monitoring Sep 05, 2024, 07:39 PM UTC
We are continuing to monitor for any further issues.
- resolved Sep 05, 2024, 08:01 PM UTC
The issue has now been resolved and the network is fully functional.
Previewnet Execution Outage
Timeline · 2 updates
- identified Jul 25, 2024, 08:11 PM UTC
We have identified an issue with the recent HCU. We are working to resolve the issue. Updates to the incident will be posted as we have more information.
- resolved Jul 26, 2024, 10:54 PM UTC
We have sporked the network to resolve the underlying issue
Transaction execution has stopped
Affected: Transaction ExecutionBlock Sealing
Timeline · 2 updates
- investigating Jun 13, 2024, 03:28 PM UTC
Transaction execution has stopped on Flow mainnet. We are currently investigating the issue.
- resolved Jun 13, 2024, 03:44 PM UTC
The issue has been resolved and transaction execution has resumed. However, one of the execution nodes run by the Foundation has been stopped as we are still investigating the root cause.