Hi @Charlie G
Thank you for posting this in Microsoft Q&A.
I understand your query that some users DELETED and other DISABLED as a result of an Azure AD Identity Governance Access Review?
Could you please check this settings Action to apply on denied guest users
in Azure AD Identity Governance access reviews?
This option is only available if the access review is scoped to include only guest users to specify what happens to guest users if they're denied either by a reviewer or by the If reviewers don't respond setting.
Remove user's membership from the resource: This option removes a denied guest user's access to the group or application being reviewed. They can still sign in to the tenant and won't lose any other access.
Block user from signing-in for 30 days, then remove user from the tenant: This option blocks a denied guest user from signing in to the tenant, no matter if they have access to other resources. If this action was taken in error, admins can reenable the guest user's access within 30 days after the guest user was disabled. If no action is taken on the disabled guest user after 30 days, they're deleted from the tenant.
If your access settings select Block user from signing-in for 30 days, then remove user from the tenant option this might be the reason for some users DELETED and other DISABLED as a result of an Azure AD Identity Governance Access Review
For more information: https://learn.microsoft.com/en-us/entra/id-governance/access-reviews-external-users#disable-and-delete-external-identities-with-microsoft-entra-access-reviews
Hope this helps. Do let us know if you any further queries.
Thanks,
Navya.
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