Hedera Outage History

42 incidents recorded over the last 365 days, 1 of them resolved. Durations are measured from when PulsAPI first saw the problem to when it cleared, which is usually longer than the vendor's own figure.

Live Hedera status100.00% uptime history

Every Recorded Hedera Incident

Hedera incidents, newest first, with date, duration and status.
DateIncidentDurationStatus
Nov 6, 2026Testnet Upgrade to v0.79Hedera will be upgrading the Hedera testnet to v0.79 on Friday, November 6, 2026 at 18:00 UTC. The upgrade will take approximately 40 minutes to complete, users should expect some disruption to network services during…40 minScheduled
Nov 4, 2026Testnet Upgrade to v0.79Hedera will be upgrading the Hedera testnet to v0.79 on Wednesday, November 4, 2026 at 18:00 UTC. The upgrade will take approximately 40 minutes to complete, users should expect some disruption to network services…40 minScheduled
Nov 3, 2026EDF/node18 scheduled maintenanceScheduled maintenance is currently in progress. We will provide updates as necessary.1h 0mScheduled
Oct 28, 2026Mainnet Upgrade to v0.78.2The Hedera mainnet has been upgraded to v0.78.2. The network is now available for use while additional verification of the upgrade is being performed. You can view the release notes for v0.78.2 here…40 minScheduled
Oct 16, 2026Mainnet Upgrade to v0.78.1The Hedera mainnet has been upgraded to v0.78.1. The network is now available for use while additional verification of the upgrade is being performed. You can view the release notes for v0.78.1 here…40 minScheduled
Oct 8, 2026Testnet Upgrade to v0.78.0The Hedera testnet has been upgraded to v0.78.0. The network is now available for use while additional verification of the upgrade is being performed. You can view the release notes for v0.78.0 here…40 minScheduled
Oct 5, 2026Accenture/node38 scheduled maintenanceScheduled maintenance is currently in progress. We will provide updates as necessary.4h 0mScheduled
Oct 4, 2026Mainnet Upgrade to v0.77The Hedera mainnet has been upgraded to v0.77.5. The network is now available for use while additional verification of the upgrade is being performed. You can view the release notes for v0.77.5 here…40 minScheduled
Oct 3, 2026Zain Group/node06 scheduled maintenanceScheduled maintenance is currently in progress. We will provide updates as necessary.8h 0mScheduled
Sep 29, 2026Mainnet Upgrade to v0.77.2Completed: The Hedera mainnet upgrade to v0.77.2 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7740 minScheduled
Sep 29, 2026AccountBalanceQuery Deprecation in v0.77Maintenance will begin as scheduled in 60 minutes.24h 0mScheduled
Sep 28, 2026Aberdeen Investments/node26 scheduled maintenanceThe scheduled maintenance has been completed.6h 0mScheduled
Sep 22, 2026Zain Group/node06 scheduled maintenanceThe scheduled maintenance has been completed.7h 0mScheduled
Sep 15, 2026Testnet Upgrade to v0.77.2Completed: The Hedera testnet upgrade to v0.77.2 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7740 minScheduled
Sep 10, 2026Testnet Upgrade to v0.77Testnet 0.77 upgrade scheduled for Thursday, September 10 2026 has been canceled.40 minScheduled
Sep 9, 2026Testnet Upgrade to v0.77Testnet v0.77 upgrade scheduled for Wednesday, September 9 2026 has been canceled.40 minScheduled
Sep 1, 2026Testnet Upgrade to v0.76.3The Hedera testnet upgrade to 0.76.3 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7640 minScheduled
Aug 29, 2026Mainnet Upgrade to v0.76The Hedera mainnet upgrade to 0.76.3 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7640 minScheduled
Aug 27, 2026Dell/node39 scheduled maintenanceThe scheduled maintenance has been completed.98h 0mScheduled
Aug 24, 2026Aberdeen Investments/node26 scheduled maintenanceThe scheduled maintenance has been completed.6h 0mScheduled
Aug 22, 2026Mainnet Upgrade to v0.76.2Completed: The Hedera mainnet upgrade to v0.76.2 has been completed successfully!40 minScheduled
Aug 19, 2026Mainnet Upgrade to v0.76Completed: The Hedera mainnet upgrade to v0.76.1 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7640 minScheduled
Aug 15, 2026Australian Payments Plus/node17 scheduled maintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Aug 6, 2026Testnet Upgrade to v0.76.1The Hedera testnet upgrade to 0.76.1 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7640 minScheduled
Aug 4, 2026Testnet Upgrade to v0.76Testnet 0.76 upgrade scheduled for Tuesday, August 4, 2026 has been canceled.40 minScheduled
Jul 31, 2026Transitional Nodes Phased OutThe scheduled maintenance has been completed.1 minScheduled
Jul 30, 2026Testnet Upgrade to v0.76Testnet v0.76 upgrade scheduled for Thursday, July 30 2026 has been canceled.40 minScheduled
Jul 28, 2026Testnet Upgrade to v0.76Testnet v0.76 upgrade scheduled for Tuesday, July 28 2026 has been canceled.40 minScheduled
Jul 27, 2026Aberdeen Investments/node26 scheduled maintenanceThe scheduled maintenance has been completed.6h 0mScheduled
Jul 24, 2026FedEx/node37 scheduled maintenanceThe scheduled maintenance has been completed.4h 0mScheduled
Jul 23, 2026Nomura/node04 scheduled maintenanceThe scheduled maintenance has been completed.2h 0mScheduled
Jul 22, 2026Mainnet Upgrade to v0.75.1The scheduled maintenance has been completed.40 minScheduled
Jul 14, 2026Testnet Upgrade to v0.75.1The Hedera testnet upgrade to 0.75.1 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7540 minScheduled
Jul 8, 2026Mainnet Upgrade to v0.74.3The Hedera mainnet upgrade to 0.74.3 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7440 minScheduled
Jun 29, 2026Aberdeen Investments/node26 scheduled maintenanceThe scheduled maintenance has been completed.6h 0mScheduled
Jun 25, 2026Testnet Upgrade to v0.75The Testnet v0.75 upgrade scheduled for Thursday, June 26, 2026 has been canceled and will be rescheduled at a later date.40 minScheduled
Jun 24, 2026Testnet Upgrade to v0.75Testnet v0.75.0 upgrade scheduled for Wednesday, June 24 2026 has been canceled and rescheduled to Thursday, June 25 2026.40 minScheduled
Jun 23, 2026Testnet Upgrade to v0.75Testnet 0.75.0 upgrade scheduled for Tuesday, June 23 2026 has been canceled and moved to Wednesday, June 24 2026.40 minScheduled
Jun 21, 2026Arrow Electronics/node32 scheduled maintenanceThe scheduled maintenance has been completed.6h 0mScheduled
Jun 20, 2026Mainnet Upgrade to v0.74.2Completed: The Hedera mainnet upgrade to v0.74.2 has been completed successfully! https://docs.hedera.com/hedera/networks/release-notes/services#release-v0.7440 minScheduled
Jun 20, 2026Arrow Electronics/node32 scheduled maintenanceThe scheduled maintenance has been completed.6h 0mScheduled
May 20, 2026Hedera mainnet is still upgradingThe problem that led to the extended outage has been resolved and the upgrade to 0.73.0 has been completed successfully. Release notes: https://docs.hedera.com/hedera/networks/release-notes/services#release-v0-7345 minResolved

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How to Read This Hedera Incident Log

Each row is an incident PulsAPI observed, not a summary written afterwards. The duration is wall-clock time between the first failing check and the first clean one, so it includes the window before Hedera acknowledged anything. Vendor post-mortems typically measure from acknowledgement, which is why their numbers are usually shorter.

Incidents still open have no duration yet and are listed as ongoing rather than being given a running total. The archive covers the last 365 days; anything older has aged out of the window rather than never having happened.

The longest single Hedera outage in this window ran 4d 2h, against a mean recovery of 4h 49m. If you depend on Hedera in a customer-facing path, the longest figure is the one to design around. The mean is what happens on a normal bad day; the maximum is what happens on the worst one.