KB2817468 causes Outlook 2013 to crash when viewing Domain Secured emails (TLS Mutual Auth – “Green tick”)

We use Domain-Secured Emails to clients companies – a.k.a Mutual Auth TLS. It gives you a green tick mark next to the email in Outlook in list view:


And in the email itself:


Which, when clicked, shows you this:


However, when KB2817468 is installed, Outlook 2013 (x86 on Windows 8 x64, at least) crashes when you try to view one of these emails, whether in preview mode or in a separate window.

The crash looks like this in the Event Viewer in the Application Event Log:

Faulting application name: OUTLOOK.EXE, version: 15.0.4517.1003, time stamp: 0x51a75237
Faulting module name: OUTLOOK.EXE, version: 15.0.4517.1003, time stamp: 0x51a75237
Exception code: 0xc0000005
Fault offset: 0x00000000003bd396
Faulting process ID: 0x14b4
Faulting application start time: 0x01ce7f1c384e7dd5
Faulting application path: C:\Program Files\Microsoft Office\Office15\OUTLOOK.EXE
Faulting module path: C:\Program Files\Microsoft Office\Office15\OUTLOOK.EXE
Report ID: 7ac2edf4-eb0f-11e2-bec4-80ee7316dfe5
Faulting package full name:
Faulting package-relative application ID:

followed by a dump from Windows Error Reporting:

Fault bucket 117878238, type 4
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P2: 15.0.4517.1003
P3: 51a75237
P5: 15.0.4517.1003
P6: 51a75237
P7: c0000005
P8: 00000000003bd396

So, the solution is to remove KB2817468 and wait for Microsoft to fix it. Good luck with that.

Note that in the Uninstall list in control panel may show three or four instances of this KB – I removed them all.

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