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Running Microsoft Process Monitor can cause a BSOD on machines running ClearCase 7.1.1.x and later



This technote identifies an issue that can occur in IBM Rational ClearCase 7.1.1.x and later when you monitor dynamic view activity using Microsoft Process Monitor where you may experience a STOP error and Blue Screen (BSOD) on Microsoft Windows Vista, Windows 2008 or Windows 7.


If you monitor dynamic view activity using Microsoft Process Monitor on Windows Vista, Windows 2008 or Windows 7 you may receive a STOP error and BSOD.

The system crashes with an NTFS_FILE_SYSTEM (24) STOP error.


This issue has been identified as a product defect under APAR PK67686.

Resolving The Problem

The defect has been resolved in ClearCase, and

The following is no longer a requirement in ClearCase or or later.

After applying one of the above fix packs or installing a later version you must then add the following Microsoft Windows registry entry to implement the fix.


This solution contains information about modifying the system registry. Before making any modifications to the Microsoft Registry Editor, it is strongly recommended that you make a backup of the existing registry. For more information describing how to back up the registry, refer to Microsoft Knowledge Base article 256986

Add the value MvfsViewAttachMup of type REG_DWORD and assign it a value of 1, under HKLM\SYSTEM\CurrentControlSet\Services\Mvfs\Parameters.

This requires a reboot.

: It is possible that you may experience some performance degradation after implementing this fix. However, this does not occur in all environments.

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Document Information

Modified date:
29 September 2018