Microsoft doesn't guarantee a specific time after an event occurs for the corresponding audit record to be returned in the results of an audit log search. For a complete list of Azure AD events, see Azure Active Directory Audit Report Events. The unified audit log contains user, group, application, domain, and directory activities performed in the Microsoft 365 admin center or in the Azure management portal. For more information, see Office 365 Management Activity API reference.Īzure Active Directory (Azure AD) is the directory service for Microsoft 365. The Office 365 Management Activity API is a REST web service that you can use to develop operations, security, and compliance monitoring solutions for your organization. If you want to programmatically download data from the audit log, we recommend that you use the Office 365 Management Activity API instead of using a PowerShell script. For more information, see Search-UnifiedAuditLog.įor information about exporting the search results returned by the Search-UnifiedAuditLog cmdlet to a CSV file, see the "Tips for exporting and viewing the audit log" section in Export, configure, and view audit log records. You have to run this cmdlet in Exchange Online PowerShell. That means you can use this cmdlet to search the audit log instead of using the search tool on the Audit page in the compliance portal. The underlying cmdlet used to search the audit log is an Exchange Online cmdlet, which is Search-UnifiedAuditLog. To turn on audit search again, you can run the following command in Exchange Online PowerShell: Set-AdminAuditLogConfig -UnifiedAuditLogIngestionEnabled $trueįor more information, see Turn off audit log search. If you want to turn off audit log search for your organization, you can run the following command in Exchange Online PowerShell: Set-AdminAuditLogConfig -UnifiedAuditLogIngestionEnabled $false For more information, see More information about mailbox audit logging. For more information, see Manage audit log retention policies.Įven when mailbox auditing on by default is turned on, you might notice that mailbox audit events for some users aren't found in audit log searches in the compliance portal or via the Office 365 Management Activity API. Organizations can also create audit log retention policies to retain audit records for activities in other services for up to one year. The length of time that an audit record is retained (and searchable in the audit log) depends on your Office 365 or Microsoft 365 Enterprise subscription, and specifically the type of the license that is assigned to specific users.įor users assigned an Office 365 E5 or Microsoft 365 E5 license (or users with a Microsoft 365 E5 Compliance or Microsoft 365 E5 eDiscovery and Audit add-on license), audit records for Azure Active Directory, Exchange, and SharePoint activity are retained for one year by default. When an audited activity is performed by a user or admin, an audit record is generated and stored in the audit log for your organization. This is because the underlying cmdlet used to search the audit log is an Exchange Online cmdlet. You have to assign the permissions in Exchange Online. If you assign a user the View-Only Audit Logs or Audit Logs role on the Permissions page in the compliance portal, they won't be able to search the audit log. For more information, see Manage role groups in Exchange Online. To give a user the ability to search the audit log with the minimum level of privileges, you can create a custom role group in Exchange Online, add the View-Only Audit Logs or Audit Logs role, and then add the user as a member of the new role group. Global administrators in Office 365 and Microsoft 365 are automatically added as members of the Organization Management role group in Exchange Online. By default, these roles are assigned to the Compliance Management and Organization Management role groups on the Permissions page in the Exchange admin center. You have to be assigned the View-Only Audit Logs or Audit Logs role in Exchange Online to search the audit log. Although the Get-AdminAuditLogConfig cmdlet is also available in Security & Compliance PowerShell, the UnifiedAuditLogIngestionEnabled property is always False, even when audit log search is turned on. Be sure to run the previous command in Exchange Online PowerShell.
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