PostHog Outage History
PostHog is up right nowPingoru has recorded 37 incidents for PostHog: 37 in the last 12 months and 29 in the last 90 days.
Incidents, newest first
Minor November 3, 2026 Event ingestion: processing delays 30m US Cloud 🇺🇸 (Event Ingestion Lag)
Started Nov 03, 2026, 06:52 PM UTC· resolved Nov 03, 2026, 07:23 PM UTC
- identified Nov 03, 2026, 06:40 PM UTC
We’ve identified processing delays in the event ingestion pipeline. Events may take longer than usual to appear in the product. Data is not lost but may not show in PostHog apps and queries until the processing delay is resolved.
- monitoring Nov 03, 2026, 06:52 PM UTC
The impacted node was identified and all service running again as normal. Lag is coming down and we're monitoring for now.
- resolved Nov 03, 2026, 07:23 PM UTC
All events processing and delays are back to normal levels.
Major November 3, 2026 Workflows Email Metric Ingestion Outage 38m EU Cloud 🇪🇺 (Workflows), US Cloud 🇺🇸 (Workflows)
Started Nov 03, 2026, 10:58 AM UTC· resolved Nov 03, 2026, 11:36 AM UTC
- identified Nov 03, 2026, 11:21 AM UTC
Due to a rollout issue we are currently experiencing some ingestion problem with email metrics like open rates, click through, bounces etc. We identified the issue and already rolled out a fix which stops the bleeding. We will inform the impacted customers with the impact that they experience if we cannot recover the lost metrics.
- monitoring Nov 03, 2026, 12:23 PM UTC
We identified the customers that have been affected by the incident and of which their workflow email sending workflow steps show as failed and stopped the workflow run. The emails for the failed steps went out, but the workflow aborted at that point. We are working on resuming the failed workflows and will inform the affected customers.
- resolved Nov 03, 2026, 03:25 PM UTC
Between 10:58-11:36 GMT we had an incident that dropped email engagement events for emails sent from within workflows and broadcasts affecting downstream triggered automations for a handful of customers. At no point were emails lost. Additionally during this time period email metrics are showing inflated numbers. All affected customers will be contacted by us about their affected workflows and impact.
Minor October 27, 2026 Agents: elevated GitHub error rates 2h 39m EU Cloud 🇪🇺 (Cloud AI Agents), US Cloud 🇺🇸 (Cloud AI Agents)
Started Oct 27, 2026, 10:23 AM UTC· resolved Oct 27, 2026, 01:02 PM UTC
- investigating Oct 27, 2026, 10:23 AM UTC
We’re investigating elevated GitHub API error rates impacting parts of the Agents infrastructure.
- identified Oct 27, 2026, 10:54 AM UTC
We’re implementing a fix for transient errors with the GitHub API.
- resolved Oct 27, 2026, 01:02 PM UTC
We’ve deployed a mitigation for transient GitHub errors and haven’t observed further failures since.
Minor October 22, 2026 Application: partial outage 1h 9m US Cloud 🇺🇸 (App (Web & Desktop)), US Cloud 🇺🇸 (Feature Flags API), US Cloud 🇺🇸 (Destination Delivery (realtime))
Started Oct 22, 2026, 08:34 PM UTC· resolved Oct 22, 2026, 09:43 PM UTC
- investigating Oct 22, 2026, 08:45 PM UTC
We’re investigating an issue causing parts of the product to be inaccessible. Some users may see errors loading specific pages or actions, as well as delays on our /flags endpoint.
- investigating Oct 22, 2026, 09:32 PM UTC
We’re still investigating an issue causing issues with flags, desktop, and CDP. We will provide an update as we know more
- identified Oct 22, 2026, 09:43 PM UTC
We have identified the root cause and are seeing services return to normal. There is still a lag on CDP destinations that we are monitoring
- monitoring Oct 22, 2026, 09:45 PM UTC
All services have recovered and we are currently monitoring their performance.
- resolved Oct 22, 2026, 09:59 PM UTC
All services have returned to normal.
Minor October 13, 2026 PostHog AI connections 9m EU Cloud 🇪🇺 (Cloud AI Agents), US Cloud 🇺🇸 (Cloud AI Agents)
Started Oct 13, 2026, 06:14 PM UTC· resolved Oct 13, 2026, 06:24 PM UTC
- monitoring Oct 13, 2026, 06:14 PM UTC
We're currently seeing issues connecting to PostHog AI in both the US and EU. Other functionality may also be impacted. Things are already improving, but engineers are currently investigating further.
- resolved Oct 13, 2026, 06:24 PM UTC
This issue has been resolved. PostHog AI and other services are back to normal. Apologies for the interruption.
Minor October 9, 2026 Google Ads Data Warehouse source - some schemas are failing to sync 1h 48m US Cloud 🇺🇸 (Data Warehouse Source Ingestion), EU Cloud 🇪🇺 (Data Warehouse Source Ingestion)
Started Oct 09, 2026, 06:30 AM UTC· resolved Oct 09, 2026, 08:19 AM UTC
- investigating Oct 09, 2026, 06:30 AM UTC
We're currently investigating reports that the Google Ads keyword_stats and landing_page_stats schemas are failing to sync.
- identified Oct 09, 2026, 06:54 AM UTC
We've identified the cause of this issue, and are implementing a fix now.
- resolved Oct 09, 2026, 08:19 AM UTC
We've released a fix for this - affected Google Ads tables will catch up automatically at their next scheduled sync, or you can trigger a refresh manually to update the tables sooner.
Minor October 6, 2026 Warehouse sources delayed imports 1h 2m US Cloud 🇺🇸 (Data Warehouse Source Ingestion), EU Cloud 🇪🇺 (Data Warehouse Source Ingestion)
Started Oct 06, 2026, 03:56 PM UTC· resolved Oct 06, 2026, 04:58 PM UTC
- monitoring Oct 06, 2026, 03:56 PM UTC
There's a delay in processing warehouse sources imports - we've identified the issue and have applied a fix. Now monitoring the backlog - there is no data loss
- resolved Oct 06, 2026, 04:58 PM UTC
Warehouse sources backlog has been processed
Minor September 30, 2026 PostHog failing to load 13m US Cloud 🇺🇸 (App (Web & Desktop))
Started Sep 30, 2026, 07:21 AM UTC· resolved Sep 30, 2026, 07:34 AM UTC
- identified Sep 30, 2026, 07:21 AM UTC
The PostHog app is failing to load for some customers. We're investigating this now.
- monitoring Sep 30, 2026, 07:34 AM UTC
We've implemented a fix and PostHog is now loading. We're continuing to monitor.
- resolved Sep 30, 2026, 08:43 AM UTC
PostHog has been loading fine after the fix and everything is back to normal.
Minor September 30, 2026 Analytics: query timeouts/failures 2h 6m
Started Sep 30, 2026, 01:27 AM UTC· resolved Sep 30, 2026, 03:33 AM UTC
- identified Sep 30, 2026, 01:27 AM UTC
We’ve identified an issue affecting analytics queries (timeouts and/or failures). Dashboards, insights, and other query-driven views may be slow or unavailable.
- monitoring Sep 30, 2026, 02:15 AM UTC
A fix has been implemented and deployed. The issue has resolved and we are continuing to monitor the situation.
- resolved Sep 30, 2026, 03:33 AM UTC
We’ve rolled back the deployment which caused the issue and query failures have returned to normal levels.
Minor September 28, 2026 Log ingestion: processing delays 16m EU Cloud 🇪🇺 (Logs)
Started Sep 28, 2026, 07:56 PM UTC· resolved Sep 28, 2026, 08:12 PM UTC
- monitoring Sep 28, 2026, 07:56 PM UTC
We’ve identified processing delays in the log ingestion pipeline. Logs may take longer than usual to appear in the product. Data is not lost but may not show in PostHog apps and queries until the processing delay is resolved.
- resolved Sep 28, 2026, 08:12 PM UTC
We temporarily experienced some ingestion delays for logs in the EU cloud region, caused by updates we were applying to our ingestion pipeline. We paused these updates and log ingestion has resumed to normal latencies.
Critical September 14, 2026 PostHog Cloud runs are failing to boot 30m US Cloud 🇺🇸 (Cloud AI Agents)
Started Sep 14, 2026, 10:24 AM UTC· resolved Sep 14, 2026, 10:54 AM UTC
- identified Sep 14, 2026, 10:24 AM UTC
Problem has been identified and a fix is being rolled out
- resolved Sep 14, 2026, 10:54 AM UTC
Issue has been fixed
Minor September 10, 2026 Analytics: query timeouts/failures 8m
Started Sep 10, 2026, 02:53 PM UTC· resolved Sep 10, 2026, 03:01 PM UTC
- monitoring Sep 10, 2026, 02:53 PM UTC
We’ve identified an issue affecting analytics queries (timeouts and/or failures). We have mitigated the issue and are continuing to monitor.
- resolved Sep 10, 2026, 03:01 PM UTC
Failures and timeouts due to load have been mitigated, and we are working on improvements to prevent this from happening again.
Minor September 10, 2026 Some warehouse sources are failing to sync 2h 25m US Cloud 🇺🇸 (Data Warehouse Source Ingestion), EU Cloud 🇪🇺 (Data Warehouse Source Ingestion)
Started Sep 10, 2026, 08:28 AM UTC· resolved Sep 10, 2026, 10:54 AM UTC
- investigating Sep 09, 2026, 10:30 PM UTC
Some of our data warehouse sources (including Google Ads, Google Sheets, Google Search Console, Google Analytics, Salesforce, Hubspot, TikTok and Bing) are currently failing to sync. We're currently investigating. Syncs started failing at ~2230 UTC 9th September.
- monitoring Sep 10, 2026, 08:41 AM UTC
We've identified the cause and implemented a fix. Warehouse sources that failed to sync will catch up on their next scheduled run. A manual sync can be triggered to refresh data for affected sources sooner.
- resolved Sep 10, 2026, 10:54 AM UTC
This incident has been resolved. Any warehouse sources that failed to sync will catch up on their next scheduled run. A manual sync can be triggered to refresh data for affected sources sooner.
Minor September 9, 2026 Workflows: Email sending currently delayed 2h 34m US Cloud 🇺🇸 (Workflows)
Started Sep 09, 2026, 02:42 PM UTC· resolved Sep 09, 2026, 05:16 PM UTC
- investigating Sep 09, 2026, 02:42 PM UTC
Email sending is currently delayed. We are investigating the issue. No data is lost.
- identified Sep 09, 2026, 03:01 PM UTC
We found the culprit which turns out to be a poison pill entry in our email queue which blocks the queue from proceeding. We are taking steps to resolve this issue.
- monitoring Sep 09, 2026, 03:12 PM UTC
We fixed the underlying issue and email sending is proceeding normally again. Emails will be delayed. We are monitoring the fix and taking action to avoid a poison pill like this to happen again.
- resolved Sep 09, 2026, 03:58 PM UTC
Whilst the temporary fix worked we have meanwhile taken action and hardened our systems so this kind of poison pill problem can't happen again. The email queue will drain and some emails will arrive later but no data was lost.
- monitoring Sep 09, 2026, 04:21 PM UTC
We're still working through the backlog of emails - we're monitoring and will update this incident once we've caught up. You can monitor progress of individual workflows from the 'invocations' tab of the workflow in PostHog - delayed runs will transition from 'Running' to 'Succeeded' once complete.
- resolved Sep 09, 2026, 05:16 PM UTC
We've caught up on all Workflow emails.
Minor September 9, 2026 Insights alerts are not being triggered 17h 17m EU Cloud 🇪🇺 (App (Web & Desktop))
Started Sep 09, 2026, 05:49 AM UTC· resolved Sep 09, 2026, 11:06 PM UTC
- investigating Sep 09, 2026, 12:32 PM UTC
Alerts on insights are not being sent, the team is investigating
- identified Sep 09, 2026, 01:10 PM UTC
We’ve identified that the EU insight alert scheduler is getting overloaded by an unbounded batch of due alerts, which can cause scheduler runs to time out and prevent new alert checks from being scheduled. We have a mitigation ready in PR #97378: https://github.com/PostHog/posthog/pull/97378. This is intended to let the EU cluster drain the backlog gradually once deployed.
- monitoring Sep 09, 2026, 03:21 PM UTC
The fix to unblock the backlog is now deployed and in-progress. We're continuing to monitor the issue.
- monitoring Sep 09, 2026, 06:56 PM UTC
All but a handful of alerts are caught up. We're working to get those alerts processed now and continuing to monitor. For almost all customers there should be no impact at this time.
- resolved Sep 09, 2026, 11:06 PM UTC
The fix has been fully deployed, and alerts on insights are back to normal.
Major September 8, 2026 Realtime destinations: delivery issues 2h 40m US Cloud 🇺🇸 (Destination Delivery (realtime)), EU Cloud 🇪🇺 (Destination Delivery (realtime))
Started Sep 08, 2026, 09:39 AM UTC· resolved Sep 08, 2026, 12:19 PM UTC
- identified Sep 08, 2026, 09:39 AM UTC
A breaking change in our HogVM caused some destinations to fail. We currently identified the issue and preparing a fix to mitigate the issue.
- monitoring Sep 08, 2026, 10:37 AM UTC
We've identified the root cause: a recent change to Hog function validation was stricter than intended and caused some valid destinations and transformations to fail. When this happens, matching events aren't forwarded to the destination and those deliveries can't be replayed - the events themselves remain safely in PostHog, but the forwarding for the affected window is lost. Only a very small number of customers were affected. We've pulled the complete lists of impacted teams and functions in EU and US to start outbound communication. A fix has been merged that restores the previous behaviour and stops new failures once deployed. We're also scoping a longer-term mechanism to make this class of failure recoverable in the future.
- resolved Sep 08, 2026, 12:19 PM UTC
The issue was fixed and everything is back to normal. The impacted customers will be informed.
Minor September 2, 2026 PostHog AI, PostHog Desktop, Cloud Agents: elevated API error rates 1h 3m EU Cloud 🇪🇺 (Cloud AI Agents), US Cloud 🇺🇸 (Cloud AI Agents)
Started Sep 02, 2026, 03:28 PM UTC· resolved Sep 02, 2026, 04:32 PM UTC
- investigating Sep 02, 2026, 03:28 PM UTC
We’re investigating elevated API error rates impacting PostHog AI, PostHog Desktop and Cloud Agents.
- monitoring Sep 02, 2026, 03:44 PM UTC
A fix has been implemented and deployed. We are actively monitoring for updates.
- resolved Sep 02, 2026, 04:32 PM UTC
Traffic has resumed back to normal.
Minor September 2, 2026 Application: elevated Scout API error rates 1h 14m EU Cloud 🇪🇺 (Cloud AI Agents), US Cloud 🇺🇸 (Cloud AI Agents)
Started Sep 02, 2026, 07:37 AM UTC· resolved Sep 02, 2026, 08:51 AM UTC
- investigating Sep 02, 2026, 07:37 AM UTC
We’re investigating elevated Scout API error rates impacting parts of the application.
- identified Sep 02, 2026, 08:10 AM UTC
We’re investigating elevated API error rates impacting parts of the application.
- monitoring Sep 02, 2026, 08:15 AM UTC
We’re investigating elevated API error rates impacting parts of the application.
- resolved Sep 02, 2026, 08:51 AM UTC
We identified and reverted the PR that triggered elevated API errors in Scouts.
Minor September 1, 2026 Session Replay Outage 13m
Started Sep 01, 2026, 05:59 PM UTC· resolved Sep 01, 2026, 06:12 PM UTC
- investigating Sep 01, 2026, 05:59 PM UTC
Due to networking issues we are currently unable to serve requests for Session Replay recording data. We have identified the issue and a fix is being implemented.
- resolved Sep 01, 2026, 06:12 PM UTC
A fix has been deployed and Session Replay playback has been restored. No loss of data occurred as a result of this incident.
Minor August 31, 2026 Analytics: query timeouts/failures 1d 3h
Started Aug 31, 2026, 11:57 PM UTC· resolved Sep 02, 2026, 03:32 AM UTC
- investigating Aug 31, 2026, 11:57 PM UTC
We’ve identified an issue affecting analytics queries (timeouts and/or failures). Dashboards, insights, and other query-driven views may be slow or unavailable.
- monitoring Sep 01, 2026, 04:02 AM UTC
We've load-shed the traffic spikes and the latency has come down and the errors have decreased. Still investigating the potential culprits of the spike in the first place.
- resolved Sep 02, 2026, 03:32 AM UTC
Queries have returned to normal. We have identified the cause and are working on a fix to prevent the issue from occurring again.
Minor August 25, 2026 Application: partial outage 39m US Cloud 🇺🇸 (App (Web & Desktop)), US Cloud 🇺🇸 (Cloud AI Agents)
Started Aug 25, 2026, 09:22 AM UTC· resolved Aug 25, 2026, 10:02 AM UTC
- investigating Aug 25, 2026, 09:22 AM UTC
We’re investigating an issue causing parts of the product to be inaccessible. Some users may see errors loading specific pages or actions.
- monitoring Aug 25, 2026, 10:02 AM UTC
We’re have investigated an issue causing parts of the product to be inaccessible. Some users have seen errors loading specific pages or actions. The issue is resolved now and we're monitoring.
- resolved Aug 25, 2026, 11:09 AM UTC
We've been monitoring the situation and everything is working fine again.
Minor August 20, 2026 Application: partial outage 3m US Cloud 🇺🇸 (App (Web & Desktop))
Started Aug 20, 2026, 07:30 PM UTC· resolved Aug 20, 2026, 07:33 PM UTC
- investigating Aug 20, 2026, 07:18 PM UTC
We’re investigating an issue causing parts of the product to be inaccessible. Some users may see errors loading specific pages or actions.
- monitoring Aug 20, 2026, 07:30 PM UTC
The issue is resolving and we are continuing to monitor the situation.
- resolved Aug 20, 2026, 07:33 PM UTC
The incident has been resolved
Minor August 20, 2026 MCP: elevated API error rates 49m EU Cloud 🇪🇺 (MCP Server), US Cloud 🇺🇸 (MCP Server)
Started Aug 20, 2026, 04:05 PM UTC· resolved Aug 20, 2026, 04:55 PM UTC
- investigating Aug 20, 2026, 04:05 PM UTC
We’re investigating elevated MCP error rates impacting parts of the application.
- resolved Aug 20, 2026, 04:55 PM UTC
The MCP server operated normally throughout, and the elevated error rate was due to rate-limit responses to a few projects with unusually high request volume.
Minor August 19, 2026 Application: elevated API error rates in US region 1h 4m
Started Aug 19, 2026, 08:06 PM UTC· resolved Aug 19, 2026, 09:11 PM UTC
- investigating Aug 19, 2026, 08:06 PM UTC
We’re investigating elevated API error rates impacting parts of the application.
- identified Aug 19, 2026, 08:08 PM UTC
We’re investigating elevated API error rates impacting parts of the application.
- monitoring Aug 19, 2026, 08:10 PM UTC
We’re investigating elevated API error rates impacting parts of the application.
- resolved Aug 19, 2026, 09:11 PM UTC
We’re investigating elevated API error rates impacting parts of the application.
Major August 18, 2026 Workflows: email sending failing in certain workflows 1h 18m EU Cloud 🇪🇺 (Workflows), US Cloud 🇺🇸 (Workflows)
Started Aug 18, 2026, 08:35 PM UTC· resolved Aug 18, 2026, 09:53 PM UTC
- investigating Aug 18, 2026, 08:35 PM UTC
We're seeing an increased email failures in certain workflows in both regions.
- identified Aug 18, 2026, 08:50 PM UTC
We have identified the cause of the email sending failures affecting some workflows. A fix is in review, and we will update this page once it is rolled out.
- monitoring Aug 18, 2026, 09:42 PM UTC
We have deployed a fix and are monitoring recovery. Affected workflows resume sending automatically, with no action needed. Emails that failed during the incident were not sent automatically. We are preparing a way to rerun the affected runs and will contact the affected customers directly.
- resolved Aug 18, 2026, 09:53 PM UTC
The fix is deployed and email sending is back to normal in both regions. We will reach out to affected customers about a rerun of the emails that failed during the incident.