Outage in Fly.io
flyctl deploy creating new app instances
Resolved MinorIncident Report
Summary AI Generated
Fly.io experienced a deployment issue where `fly deploy` commands were creating new machine instances instead of updating existing ones, causing applications to enter a mixed state. The problem affected the Deployments component and lasted 51 minutes before being resolved. Users could work around the issue by either removing the "processes = [ "app" ]" line from their fly.toml configuration or downgrading flyctl to version 0.4.40.
We're investigating an issue where fly deploy is creating new Fly machine instances rather than updating existing ones, leading to apps with a mixed state. We're currently investigating the issue.
As a workaround, please try removing the "processes = [ "app" ]" line from your fly.toml configuration file and redeploying. Another workaround is to downgrade flyctl to 0.4.40 - this should resolve the issue in the meantime.
Components affected
Fly.io DeploymentsTrusted by 1,000+ teams
Never miss outages in third-party dependencies
Stop finding out about outages from your users. Monitor 6,320+ cloud services and get alerted the second something breaks.
Latest Updates ( sorted recent to last )
RESOLVED
about 5 hours ago - at 04/29/2026 12:40AM
This incident has been resolved.
MONITORING
about 5 hours ago - at 04/29/2026 12:31AM
A fix has been implemented and we are monitoring the results.
IDENTIFIED
about 6 hours ago - at 04/29/2026 12:07AM
The issue has been identified and a fix is being implemented.
INVESTIGATING
about 6 hours ago - at 04/28/2026 11:50PM
We're investigating an issue where fly deploy is creating new Fly machine instances rather than updating existing ones, leading to apps with a mixed state. We're currently investigating the issue.
As a workaround, please try removing the "processes = [ "app" ]" line from your fly.toml configuration file and redeploying. Another workaround is to downgrade flyctl to 0.4.40 - this should resolve the issue in the meantime.
Latest Fly.io outages
Slow machines operations in IAD region - 4 days ago
Errors (5xx, timeouts) in Fly.io dashboard - 6 days ago
Increased latency in SIN - 9 days ago
TLS certificate issues - 12 days ago
Never miss outages in third-party dependencies
With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.
Start free trialNo credit card required · Cancel anytime · 6320 services available
Integrations with
