I hade a issue about this before and got an answer from the community that the problem was within some trend Micro drivers but now I got an answer from Trend Micro that it was not their fault that their Firewall driver gave a BSOD they say that they only used 500b. And the problem is within Vista 64bit, because the Microsoft drivers for (NETIO,tcpip,netbt) and stuff used almost all of the maximum 24K of stack space. Can this be correct? Is their a way to increase this stack space, if not is their a way to decrease the use of stackspace? The machine is a HP 8530p with a Intel(R) WiFi Link 5300 AGN networkcard I can upload a full memory dump -(a mini dump can be found in prev post) if that can be of any help to someone understanding this kinds of things previous post http://social.technet.microsoft.com/Forums/en-US/itprovistanetworking/thread/f488dafa-93cd-4127-a5eb-7df6e75fda2f/

Hi, To confirm the issue, could you please uninstall Trend Micro to have a test? Meanwhile, please understand since Windows system uses separated user mode and kernel mode memory space, stop errors are always caused by kernel portion components, such as a third-party device drivers, backup software or anti-virus services (buggy services). The system goes to a BSOD because there is some exceptions happened in the kernel (either the device driver errors or the service errors), and Windows implements this mechanism: When it detects some errors occur in the kernel, it will kill the box in case some more severe damage happens. Then we get a blue screen or the system reboots (it depends on what the system settings are). To troubleshoot this kind of kernel crash issue, we need to debug the crashed system dump. Unfortunately, debugging is beyond what we can do in the forum. A suggestion would be to contact Microsoft Customer Service and Support (CSS) via telephone so that a dedicated Support Professional can assist with your request. Please be advised that contacting phone support will be a charged call. To obtain the phone numbers for specific technology request please take a look at the web site listed below: Microsoft - Help and Support http://support.microsoft.com/default.aspx?scid=fh;EN-US;PHONENUMBERS If Regards, Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

I think we have found a solution it's Disable Netbios over TCP/IP for the VPN connection

Glad the solution has been found. Thank you for sharing. I believe this will benefit other members in this forum. Cheers, Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.