KB2814923 – “0x0000009E” Stop Error & Volumes Can’t Be Brought Online On W2008 R2 Cluster

This KB article affects W2008 R2 only.

Assume that you try to bring a disk online on a Windows Server 2008 R2-based failover cluster. Additionally, the Update Sequence Number (USN) journal is increased to a large size (such as 4 gigabytes) on the disk volumes. In this situation, it takes a long time to mount the volumes. Additionally, you receive a Stop error message that resembles the following:

Stop 0x0000009E (Parameter1, Parameter2, Parameter3, Parameter4)


  • This Stop error describes a USER_MODE_HEALTH_MONITOR issue.
  • The parameters in this Stop error message vary, depending on the configuration of the computer.
  • Not all "Stop 0x0000009E" errors are caused by this issue.

This issue occurs because of the large size of the disk volumes. The USN journal file is read in 4-kilobyte chunks when you mount the volumes. When the file is very large, it takes a very long time to mount the volumes.

A supported hotfix is available from Microsoft.

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