# Microsoft Advertising Sync Failures

- Provider: [Census](https://down.guide/providers/census)
- Confidence: Confirmed
- Impact: Degraded
- lasted 0m
- started 2026-05-21 17:00 UTC
- id: DWN-aa7afd9def
- Official page: https://stspg.io/4vnn47w26yjd

## Updates from Census
### 2026-05-21 17:00 UTC: resolved
Syncs to Microsoft Advertising temporarily experienced failures with an error message like "OAuth2::Error: invalid\_client" from approximately 05/21/2026 17:00 UTC - 05/21/20206 23:19 UTC. 
This error was the result of the Activations Microsoft Advertising app configuration and it has now been resolved. Any impacted syncs will recover on their next scheduled run.

From the builder: does your app depend on Census? [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=census) detects problems in your own logs without hand-written monitors, and you can ask it in plain language which errors mention Census.

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