SHD / MC Checker

[serviceDegradation] DZ1299600 | Microsoft Defender XDR | Some users may receive false positive alerts from Microsoft Defender Antivirus for specific certificates



DZ1299600 | Microsoft Defender XDR | Some users may receive false positive alerts from Microsoft Defender Antivirus for specific certificates

Status serviceDegradation
Classification incident
User Impact Users may receive false positive alerts from Defender Antivirus and see legitimate files or certificates quarantined.
Last Updated 05/03/2026 18:27:05
Start Time 05/03/2026 08:52:00
End Time
Latest Message We’re applying a mechanism which will release the incorrectly quarantined files and certificates. Users should see incremental relief as this process progresses.

This quick update is designed to give the latest information on this issue.

Machine Translation 誤って隔離されたファイルや証明書を公開する仕組みを適用しています。このプロセスが進むにつれて、ユーザーは徐々に緩和感を得るはずです。

この簡単なアップデートは、この問題に関する最新情報を提供することを目的としています。