Windows Security Log Event ID 6421

Operating Systems Windows 2016 and 10
Windows Server 2019 and 2022
Category
 • Subcategory
Process Tracking
 • Plug and Play
Type Success
Corresponding events
in Windows 2003
and before
 

6421: A request was made to enable a device

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This event is generated if a user attempts to enable a device on the system. This event does not mean that a device was successfully enabled. Event ID 6422 will be generated if this attempt is successful.

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

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Description Fields in 6421

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 6421

A request was made to enable a device.
Subject:
     Security ID: AzureAD\BarryVista
     Account Name: BarryVista
     Account Domain: AzureAD
     Logon ID: 0x833A8
Device ID: PCISTOR\DISK&VEN_RSPER&PROD_RTS5208LUN0&REV_1.00\0000
Device Name: SDXC Card
Class ID: {4d36e967-e325-11ce-bfc1-08002be10318}
Class Name: DiskDrive
Hardware IDs:
     RSPCIESTOR\GenDisk
     GenDisk
Compatible IDs:
     SCSI\Disk
Location Information: -

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