Windows Security Log Event ID 6423

Operating Systems Windows 2016 and 10
Category
 • Subcategory
Process Tracking
 • Plug and Play
Type Failure
Corresponding events
in Windows 2003
and before
 
Discussions on Event ID 6423

6423: The installation of this device is forbidden by system policy

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Logged as a result of \Computer Configuration\Administrative Templates\System\Device Installation\Device Installation Restrictions.  That category contains four device installation restriction settings that allow you to prevent devices from being installed that match certain specified criteria.  You can prevent installation of devices that match device ID's, device class GUID's or are removable devices.  You can also prevent devices from being installed that do not match any other policies.

These events are logged for all devices we tested – not just USB devices.

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Description Fields in 6423

Subject:
Security ID: Domain\User performing the action.
Account Name: User performing the action.
Account Domain: Domain user belongs to.
Logon ID: Hexidecimal value of user

Device ID: ID of the device user attempted to disable.  In Device Manager you can find this listed as the "Device instance path" on the Details tab of the device.

Device Name: Name of device as it appears in Windows.  In Device Manager you can find this listed as the "Device description" on the Details tab of the device.

Class ID: GUID of the device as it appears in Windows.  In Device Manager you can find this listed as the "Class GUID" on the Details tab of the device.

Class Name: Class of the device as it appears in Windows. In Device Manager you can find this listed as the "Class" on the Details tab of the device.

Hardware IDs: List of IDs of the device as they appear in Windows.  In Device Manager you can find this listed as the "Hardware Ids" on the Details tab of the device.

Compatible IDs: List of Compatible IDs as they appear in Windows.  In Device Manager you can find this listed as the "Compatible Ids" on the Details tab of the device.

Location Information: Not always available.  This depends on the type of device.

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Examples of 6423

The installation of this device is forbidden by system policy.
Subject:
     Security ID: SYSTEM
     Account Name: DESKTOP-3PNSS2S$
     Account Domain: WORKGROUP
     Logon ID: 0x3E7
Device ID: PCISTOR\DISK&VEN_RSPER&PROD_RTS5208LUN0&REV_1.00\0000
Device Name: Disk drive
Class ID: {00000000-0000-0000-0000-000000000000}
Class Name:
Hardware IDs:
     RSPCIESTOR\GenDisk
     GenDisk
Compatible IDs:
     SCSI\Disk
Location Information: -

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