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Defender for Office 365 quarantine workflow

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Defender for Office 365 quarantine workflow

How users and admins work with quarantine — release, request, report, and the policy decisions behind it.

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/defender-quarantine-workflow

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01

What goes to quarantine

Messages are quarantined based on filter outcome:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/defender-quarantine-workflow

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02

Quarantine policies

A quarantine policy defines:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/defender-quarantine-workflow

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03

User notifications

When configured, users receive a periodic notification email listing recently quarantined messages with summary info and links to act on them. Configurable cadence — usually daily.

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/defender-quarantine-workflow

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04

User actions

Depending on policy, users can:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/defender-quarantine-workflow

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05

Admin actions

The full admin quarantine view at security.microsoft.com/quarantine:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/defender-quarantine-workflow

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06

Default retention

Quarantined messages are retained for 30 days by default, then auto-deleted. Configurable per policy (down to a minimum or up to 30 days maximum).

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/defender-quarantine-workflow

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07

Common configuration patterns

A reasonable starting baseline:

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/defender-quarantine-workflow

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