Outlook 2013 crashing when sending email Exception code 0xc0000602 MSO.dll error

Question

Two are three times a week Outlook crashes when sending email with the following error
Log Name:      Application
Source:        Application Error
Date:          15/01/2015 10:00:58
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      ********.***.local
Description:
Faulting application name: OUTLOOK.EXE, version: 15.0.4667.1000, time stamp: 0x543d3698
Faulting module name: mso.dll, version: 15.0.4675.1002, time stamp: 0x5474349b
Exception code: 0xc0000602
Fault offset: 0x011b1687
Faulting process id: 0x11dc
Faulting application start time: 0x01d030a6e4aa1ee7
Faulting application path: C:\Program Files (x86)\Microsoft Office\Office15\OUTLOOK.EXE
Faulting module path: C:\Program Files (x86)\Common Files\Microsoft Shared\Office15\mso.dll
Report Id: 66ad29a2-9c9d-11e4-b53c-082e5f1727fc
Event Xml:
<Event xmlns
  <System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-01-15T10:00:58.000000000Z" />
    <EventRecordID>10015</EventRecordID>
    <Channel>Application</Channel>
    <Computer>Events-HP8200.ICI.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>OUTLOOK.EXE</Data>
    <Data>15.0.4667.1000</Data>
    <Data>543d3698</Data>
    <Data>mso.dll</Data>
    <Data>15.0.4675.1002</Data>
    <Data>5474349b</Data>
    <Data>c0000602</Data>
    <Data>011b1687</Data>
    <Data>11dc</Data>
    <Data>01d030a6e4aa1ee7</Data>
    <Data>C:\Program Files (x86)\Microsoft Office\Office15\OUTLOOK.EXE</Data>
    <Data>C:\Program Files (x86)\Common Files\Microsoft Shared\Office15\mso.dll</Data>
    <Data>66ad29a2-9c9d-11e4-b53c-082e5f1727fc</Data>
  </EventData>
</Event>
Any clues on a fix?

Answer 1

Hi,
Thanks for your question.
This issue might occurs due to lots of reasons. Do you have a virus scanner installed which integrates itself with Outlook? If yes, please try to disable it, and then try again. You might opt to uninstall the virus scanner temporarily to make
sure it will not interfere the testing.
Also, lots of Office crash issues are caused by third-party add-ins. You might want to have a check and see if you have any integrated with your Outlook client which might cause the issue.
Since the issue occurs randomly ("Two are three times a week"), Office
Safe Mode will not be effective here, just manually disable all third-party add-ins in Outlook FILE>Options>Ass-Ins, use outlook for a period of time, then verify result.
Regards,
Ethan Hua
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.