Running WS2k8 x64 RTM. Running IIS, Sharepoint, SQL 2005 and WMS roles. When I first setup the server, the Backup utility ran fine using either form of VSS. Now when I run Windows Backup it abends with a fatal error. The Windows logs reports: Log Name: ApplicationSource: Application ErrorDate: 3/22/2008 5:32:53 PMEvent ID: 1000Task Category: (100)Level: ErrorKeywords: ClassicUser: N/AComputer: WS8-1.mydomain.comDescription:Faulting application wbengine.exe, version 6.0.6001.18000, time stamp 0x479191b2, faulting module wbengine.exe, version 6.0.6001.18000, time stamp 0x479191b2, exception code 0xc0000005, fault offset 0x0000000000029ad7, process id 0xe88, application start time 0x01c88c7d54508b64.Event Xml:<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2008-03-23T00:32:53.000Z" /> <EventRecordID>8704</EventRecordID> <Channel>Application</Channel> <Computer>WS8-1.mydomain.com</Computer> <Security /> </System> <EventData> <Data>wbengine.exe</Data> <Data>6.0.6001.18000</Data> <Data>479191b2</Data> <Data>wbengine.exe</Data> <Data>6.0.6001.18000</Data> <Data>479191b2</Data> <Data>c0000005</Data> <Data>0000000000029ad7</Data> <Data>e88</Data> <Data>01c88c7d54508b64</Data> </EventData></Event> I have tried researching the error with no luck. I haven't found any other log file with additional detail. At times running Backup after a reboot works. Otherwise I have to uninstall the feature, reboot, and reinstall the backup feature to make things work. Any thoughts as to that the root cause may be will be appreciated. Peter

Hi, The error message indicates this is in regard to Block Level Backup Engine service(wbengine.exe).This service comes into use when you use the Vista Backup and Restore Center to perform a Complete PC Backup. Additionally, the error code '0xC0000005' is mainly generated by an illegal "memory access violation". This can be caused from a faulty RAM, such as an incorrect/corrupt device driver, third-party software, anti-malware software and so on. So this issue is associated with the current system state. I suspect due to some drivers or third-party software, when Backup Engine server is running, this error occurred. However, after rebooting the system, the system state is changed and the factors that lead to this error was removed , so Block Level Backup Engine service works well. I hope this helps. Best wishes --------------Morgan Che

Thanks for the information. Could be the RAID driver. I am fairly confident that RAM is okay. Now the hunt begins. Peter

Might be an error accessing the catalog. Try deleting the catalog with: > wbadmin delete catalog That did the trick in my case. Hope this helps. Cheers! Ed.