USB Access Write Block

This guide will show an administrator how to restrict USB write access for Intune joined Windows devices.

Role Requirements

Procedure Scope: Administrators

Required Group Membership: Admin.Security

Handbook Reference

Package: TBD

Domain: TBD

Modifies: TBD

USB Access Write Block

1. Navigate to the Attack Surface Reduction – Intune portal, locate and select the Security Essentials Memory and USB Protection policy or an equivalent Device Control policy.
   
2. Scroll down to Configuration Settings and select Edit.
   
3. The default rules will be displayed. Begin by selecting the dropdown beside the Storage blade.  Locate the Removable Disk Deny Write Access option, we will want to select the drop down and set the configuration from Disabled or Not configured to Enabled. This will restrict the ability for USB devices to have write access. Select Next to continue.
   
4. From the Review section, you will be able to select the Settings dropdown to verify that the write access block has properly generated. Select Save to finalize the USB write access block. Rule changes propagate in less than 24 hours.
   

Need Assistance?