How to Disable Recommended File Attachments in Outlook Meeting Invitations
Question details
Organizations and users want to turn off the feature in Outlook that automatically suggests or adds recommended file attachments to meeting invitations to prevent accidental data leaks.
- Product
- Microsoft Outlook
- Device & OS
- not provided
- Scenario
- Creating and sending meeting invitations in a professional or organizational setting.
- Observed behavior
- Outlook automatically suggests or attaches recently used files to meeting invitations, creating a security risk if confidential files are inadvertently shared with attendees.
Modifying organization-wide attachment settings requires administrative access. Ensure you have approval from your IT department or access to a qualified Microsoft PowerShell administrator before proceeding.
Consult an IT Administrator for PowerShell Configuration
Since Outlook lacks a built-in toggle for this feature, you must rely on Microsoft PowerShell scripts managed by an IT professional to modify attachment behaviors at the tenant level.
Microsoft Outlook uses Microsoft Graph to suggest recent files when you create a meeting. Currently, there is no standard user-facing setting in the Outlook app or the Microsoft 365 Admin Center to turn this off for all users.
To prevent confidential files from being suggested organization-wide, system administrators must explore Exchange Online PowerShell options or modify Microsoft Graph data privacy settings.
Reach out to your organization's IT department and request a review of the current Outlook attachment and Insights policies.
Ask the administrator to investigate PowerShell cmdlets related to Microsoft Graph file suggestions and meeting insights to disable the functionality.
If a specific script is needed, visit the Microsoft Tech Community and post your query in the Windows PowerShell section for expert guidance.
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Frequently Asked Questions
Can I manually remove a recommended attachment before sending the meeting invite?
Yes. If Outlook suggests or adds a file you do not want to share, you can simply hover over the attachment and click the 'X' icon, or right-click the file and select 'Remove' before sending the invitation.
Why does Outlook suggest my confidential files in the first place?
Outlook uses Microsoft Graph to analyze your recent activity across SharePoint and OneDrive. It suggests files you have recently worked on to help you save time, but it does not inherently distinguish between standard and highly confidential documents.
Will turning off Microsoft Graph disable recommended attachments?
Disabling Microsoft Graph insights for your account can stop file suggestions, but this action will also disable other smart features and personalized experiences across Microsoft 365. Always consult your IT admin before making such changes.
