KNOWN ISSUE: BSOD with SWV 6.4.1346 after upgrading from 6.1.5126 on Windows 7 32bit

Article:TECH170343  |  Created: 2011-09-26  |  Updated: 2011-09-26  |  Article URL
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Article Type
Technical Solution



After upgrading Symantec Workspace Virtualization (SWV) 6.1.5126 to 6.4.1346, the machine experienced a Blue Screen of Death (BSOD) 3 to 4 hours later during the working day.


Windows 7 Enterprise, Service Pack (SP) 1 is not installed

SWV upgraded from 6.1.5126 to 6.4.1346

laptop is Lenovo T410
- video adapter driver: Intel DH Graphic,


For some reason the machine was running out of memory, and SWV was handling this condition poorly (it was trying to free memory it had already freed).


Code checked in to fix the multiple freeing of the MDL (fslxProbeLockAndMap), and will be included in the upcoming 6.1 SP7 Maintenance Pack (MP) 2 release.

The customer also needs to investigate why the machine was running out of memory in the first place.

Supplemental Materials


BSOD with SWV 6.4.1346 after upgrading from 6.1.5126 on Win7 32bit

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