Source: plugplaymanager Event ID: 12 (Windows Operating System 5.2) - Technet Events And Errors Message Center: Message Details

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Details
Product:	Windows Operating System
Event ID:	12
Source:	plugplaymanager
Version:	5.2
Symbolic Name:	ERR_SURPRISE_REMOVAL_2
Message:	The device '%1' (%2) disappeared from the system without first being prepared for removal.

Explanation
A device was removed from the system before the Safely Remove Hardware applet in the system tray was run.

User Action
To safely remove a device Open the Safely Remove Hardware applet, select the device, and then click Stop. A window prompts you to confirm the device or devices that you want to stop. Now it is safe to remove the device.

Related Knowledge Base articles

	You can find additional information on this topic in the following Microsoft Knowledge Base articles:
	• Event IDs 257, 12, and 51 are logged on a Windows Server 2003-based computer
	Explains why Plug and Play generates event ID 257, event ID 12, or event ID 51 on your Windows Server 2003-based computer.
	• A Volume Shadow Copy Service (VSS) update package is available for Windows Server 2003
	A hotfix update to the Volume Shadow Copy service for Microsoft Windows Server 2003 is available. This update package addresses the following specific symptoms: Software shadow copies do not complete on large volumes that use a small cluster size When...