Substack had 43 outages in the last 2 years totaling 31h 47m of downtime — averaging 1.8 incidents per month.
There were 43 Substack outages since June 18, 2024 totaling 31h 47m of downtime. Each is summarised below — incident details, duration, and resolution information.
We're experiencing a delay in processing some stats across the platform. Data on various dashboards may be out of date.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We are investigating reports of increased latency and errors for Substack.com, publication websites, and the Substack app.
We are continuing to investigate reports of increased latency and errors for all Substack websites and applications.
We have identified the issue and are beginning to see recovery across all Substack websites and applications.
Substack websites and applications are fully operational and our team is monitoring.
This incident has been resolved.
We are currently investigating this issue.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We are currently investigating this issue.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We are experiencing an outage, but we are recovering.
We are currently experiencing an elevated error rate to Substack web sites and through our mobile application, but are seeing recovery. We are continuing to work toward mitigation.
Substack services are fully available. We are continuing to monitor.
This incident has been resolved.
We are currently investigating this issue.
The issue has been identified and a fix is being implemented.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We are currently investigating this issue.
The issue has been identified and a fix is being implemented.
This incident has been resolved.
We are currently investigating an issue related to managing subscriptions.
This incident has been resolved.
We have identified a bug where some posts where automatically paywalled incorrectly. We are currently working to correct this and will provide updates here shortly.
We have resolved this issue and are monitoring.
This incident has been resolved.
We are investigating reports that some posts are not being delivered via email.
We can confirm delays in email deliveries for Substack posts starting at 9am EDT. We are working to resolve the issues.
We are continuing to work on addressing delays in email deliveries.
The delays in post delivery have been resolved and previously scheduled posts are currently being delivered. We are monitoring our systems to ensure delivery.
This incident has been resolved.
We're working on remedying an issue causing many parts of the Substack iOS and Android apps to not load properly.
This incident has been resolved.
We've identified an issue preventing the setup of new custom domains and are working to restore functionality.
This incident has been resolved.
We are investigating reports of increased errors and Latency from all Substack services.
We have identified the cause of the issue and are working toward resolution. At this time Substack is experiencing degraded performance across the web and Substack app. We are working to resolve as soon as possible.
We are continuing to work toward resolution. At this time Substack is experiencing degraded performance across the web and Substack app. We are working to resolve as soon as possible.
We are continuing to work toward resolution and anticipate recovery starting shortly. At this time Substack is experiencing degraded performance across the web and Substack app. We are working to resolve as soon as possible.
We are beginning to see recovery across Substack. We are continuing to work toward full resolution.
Substack is operating normally. We are continuing to monitor.
This incident has been resolved and Substack is operating normally.
We've identified an issue with delays in push notifications due to an outage at our push notification delivery provider, OneSignal. We expect all notifications to be delivered as normal once the issue is resolved.
This incident has been resolved.
We've investigated an issue with delays in publisher stats due to an outage at our data processing provider, Amazon Web Services. We expect no data to be lost and stats to appear as normal once the issue is resolved.
We're continuing to monitor an issue with delays in publisher stats due to an outage at our data processing provider, Amazon Web Services. We expect no data to be lost and stats to appear as normal once the issue is resolved, which we expect will be by 11 PM PT at the latest.
The outage at Amazon Web Services has been resolved and we're processing the delayed data. We expect stats to be fully up to date by 11:30 PM PT.
This incident has been resolved.
We’ve investigated a trend of dropping email open rates for a subset of publishers since 7/25. We believe this is due to the outage with Apple’s iCloud Private Relay from 7/25 — 7/27, and that this doesn't reflect an actual change in opens.
We are currently investigating this issue.
This incident has been resolved.
We are currently experiencing reduced performance to Substack websites and the Substack app. We are investigating.
We have identified the issue and are working towards resolution.
We have addressed the issue and performance has recovered. We are continuing to monitor.
This incident has been resolved.