# Microsoft Advertising Sync Failures

- Provider: [Census](https://down.guide/census)
- Level: 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.

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