Recently I needed to reinstall Microsoft Office 2007 on a 64-bit Windows 7 notebook. Since then, Outlook crashes with a BEX error, when sending or receiving messages from three accounts, but not a fourth account. What I have tried: Repairing Office; Running Office Diagnostics (all tests were OK); Inbox repair tool; Disabling all COM add-ins and programmatic associations; Removing and re-adding the three POP mail accounts which trigger the issue; Turning off DEP. The only thing which has stopped the crash is turning off Send/Receive for three of the four accounts. I'd be grateful for input, but I'm not interested in replacing the Office software or operating system. Both of those worked well until a few days ago.