We run Backup Exec 7.3 locally backing up a largish Exchange 5.5 server right down to mailbox level. Just recently the backup had been failing with a Dr Watson on Bengine.exe with access violation 0xc0000005 address 0x01605a68. When it fails it hangs at a certain point in the backup - time keeps ticking up but nothing else happens at all, when I right mouse click on the backup job in the job monitor window the job then disappears completely leaving no log file or any way to tell how far it got. It seems to be backing up about 75% of the Exchange Server. I've run ESEUTIL and ISINTEG to clean up the Exchange database but to no avail. I've seen many many postings on this type of problem but none which exactly fit this scenario. Can anyone give me a quick run down of the possible causes of this sort of error? <br><br>Thanks<br><br>Andy Russell