Additional Microsoft Defender tools and services that provide security across various platforms and environments
In Windows Defender (Microsoft Defender Antivirus), the status “Remediation incomplete” means Defender detected a threat and started cleaning it (for example, quarantining or removing files or changing related settings), but could not fully finish all required actions.
The Protection History entry with Remediation incomplete will usually include details about what additional steps are needed. Common follow‑ups include actions such as restarting the device so Defender can complete cleanup, or manually addressing items Defender cannot automatically remove (for example, files in certain locations, archives, or network shares).
Until those extra steps are taken, some parts of the detected threat or its impact might still be present, which is why the status is not shown as fully remediated.
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