Event ID 11 — Volume Shadow Copy Service Operations

Applies To: Windows Server 2008 R2

The Volume Shadow Copy Service (VSS) provides the ability to create a point in time image (shadow copy) of one or more volumes that can be used to perform backups. The service is also used during restores of applications.

Event Details

Product: Windows Operating System
ID: 11
Source: VSS
Version: 6.1
Message: Volume Shadow Copy Service information: The COM Server with CLSID %1 and name %2 cannot be started. Most likely the CPU is under heavy load. [%3] %4


Retry the operation

This event indicates that the COM server could not be started, most likely because the CPU is under heavy load.

Wait a few minutes, and retry the operation.


To verify that the Volume Shadow Copy Service (VSS) is operating correctly, retry the previous VSS operation.

Volume Shadow Copy Service Operations

File Services