I recently has a user who found that email messages from specific people would cause her Outlook 2010 to crash 100% of the time. Most peoples emails were perfectly fine and others were not. There were lots of entries in the Windows Event Log like the following Faulting application name: OUTLOOK.EXE, version: 14.0.4760.1000, time stamp: 0x4ba8fefd Faulting module name: USP10.DLL, version: 1.626.7600.20602, time stamp: 0x4b304c27 Exception code: 0xc0000005 Fault offset: 0x00027466 Faulting process id: 0xa38 ...