Amplitude incident

Historical Data may be temporarily unavailable for customers who use the User Privacy API

Minor Resolved View vendor source →

Amplitude experienced a minor incident on November 21, 2025 affecting Web Reporting, lasting 17h 26m. The incident has been resolved; the full update timeline is below.

Started
Nov 21, 2025, 11:40 PM UTC
Resolved
Nov 22, 2025, 05:07 PM UTC
Duration
17h 26m
Detected by Pingoru
Nov 21, 2025, 11:40 PM UTC

Affected components

Web Reporting

Update timeline

  1. identified Nov 21, 2025, 11:40 PM UTC

    Some customers using the User Privacy API recently may see gaps or missing historical data in their charts. This is a display issue only, no underlying data has been lost. Features using cohorts built on top of historical data may also be impacted. Data ingestion is not impacted. We have identified the cause and are working on a fix. We are working on getting an estimated ETA.

  2. identified Nov 22, 2025, 02:09 AM UTC

    We’ve deployed a fix and started reprocessing historical data. We currently estimate recovery will complete within 24 hours. We’ll provide an update once this is completed or if there are any other changes we need to share. If you have additional questions please reach out to Amplitude Support.

  3. resolved Nov 22, 2025, 05:07 PM UTC

    As of Nov 22, 2025 14:00 UTC, this incident is resolved and customers should be able to see all historical data. Please reach out to support if you're still seeing gaps in your historical data.