Oliver Sommer 
2009-04-04
reviewed 2009-04-10
Strugeling hard with frequent BSOD 0x0000007e (0xFFFFFFFFC0000047, 0xFFFFF80002EB5B48, 0xFFFFFA6001FCB590, 0xFFFFFA6001FCB630) on a Hyper-V host server for some days

at a customer site I just found this hotfix for an issue with the HTTP.sys of IIS 7 that is usually also installed if DPM is running on the same maschine as we got it at that customer.
I installed that hotfix available here (http://support.microsoft.com/kb/962943) and by now backups are running fine a again without BlueScreens on that virtualization and DPM backup host.
The above hotfix doesn't really help against that issue we were facing, the solution (I should have know already beeing a DPM TAP member on DPM SP1) seems to be the patch for bluescreened Hyper-V servers during Hyper-V VSS Writer access again which is referenced in the MS KB article:
http://support.microsoft.com/default.aspx/kb/960038/en-us