How to govern External Access in Microsoft Agent 365
A step-by-step guide to governing External Access in Microsoft Agent 365 with Rencore: detect, review by owner and severity, and remediate with an audit trail.
Governing External Access in Microsoft Agent 365 means finding where it goes wrong, reviewing the findings by owner and severity, and remediating with an audit trail. Rencore covers this concern for Microsoft Agent 365 with the pre-built controls below, so it becomes a repeatable check rather than a one-off cleanup. The steps that follow apply the same detect, review, remediate loop to External Access.
Steps
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Inventory Microsoft Agent 365
Connect Microsoft Agent 365 and let Rencore build a continuous inventory of its resources, owners, and configuration, so governance starts from what exists rather than a stale export.
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Detect with policies
Turn on the pre-built policies that cover External Access in Microsoft Agent 365 to surface oversharing, sprawl, and misconfiguration on the first scan, before writing a single custom rule.
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Review by owner and severity
Use the Microsoft Agent 365 reports to review findings by owner, category, and severity, and to share them with stakeholders who do not have a seat in the platform.
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Remediate and automate
Apply automations to fix findings at scale, route sensitive changes through approvals, and keep every action reversible and logged for the audit trail.
Microsoft Agent 365 controls for External Access
Grounded in the Rencore catalog. See the full Microsoft Agent 365 catalog on the Microsoft Agent 365 connector page.
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External-publisher Agent Available to All Users
Identifies external-publisher agents that every user in the tenant can find and install, which is a common oversharing pattern after a broad initial enablement.
Severity: High -
Agent User Is a Guest
Flags agent user accounts whose UserType is Guest, introducing external-identity provenance into agent automation.
Severity: High -
Multitenant Blueprint Without a Verified Publisher
Flags multitenant-capable agent identity blueprints that have no verified publisher recorded.
Severity: Medium -
Agent user is a Guest (likelihood)
Risk-probability factor: Guest-type agent users introduce external-identity provenance into agent automation, raising the likelihood of cross-tenant exposure.
Severity: High -
Agents Deployed Tenant-Wide
Lists agents currently deployed to every user in the tenant.
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Agents from External Publishers
Lists agents whose package source type is external (third-party publisher).
