I posted the following in Answers and was directed here.
I also ran the Outlook PSD and submitted my results. It did not find any obvious error or issue.
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I have encountered what seems to be a bug with Outlook 2013.
First off, configuration:
Windows 7 64-bit and Windows 8 64-bit
Outlook 2013 installed as part of Office Professional Plus 2013
Lync 2013 installed and connected to Exchange server
Outlook 2013 profile connected to Exchange server
Background:
I have the To-Do Bar enabled with Calendar and Tasks. This bar stays visible and persistent through opening and closing Outlook.
Scenario:
When Outlook hangs - and this can happen randomly when creating a new message - and then I choose the option to restart Outlook, when Outlook does restart, the To-Do Bar is not enabled and then I have to re-enable the Bar. The Bar is again sticky until another hang/crash occurs.
I'd like to resolve two things:
1. Allow the To-Do Bar to be enabled as per user preference after a hang/crash.
2. Address the Outlook hang.
I would love indicate what is causing the hang/crash and indicate the steps required to reproduce it, but I'm not entirely sure. I received a notice once that the Lync add-in caused the crash and was disabled after Outlook restarted. However I re-enabled the add-in and haven't seen that add-in warning since - it's been at least a few weeks. The hang/crash occurs at least once a week and doesn't log anything in the application event log. My computer has all the latest updates as well.
These are my enabled add-ons:
Outlook loaded the following add-in(s):
Name: Microsoft Exchange Add-in
Description: Exchange support for Unified Messaging, e-mail permission rules, and calendar availability.
ProgID: UmOutlookAddin.FormRegionAddin
GUID: {F959DBBB-3867-41F2-8E5F-3B8BEFAA81B3}
Load Behavior: 3
HKLM: 1
Location: C:\Program Files (x86)\Microsoft Office\Office15\ADDINS\UmOutlookAddin.dll
Boot Time (Milliseconds): 15
Name: Lync Meeting Add-in for Microsoft Office 2013
Description: Lync Meeting Add-in for Microsoft Office 2013
ProgID: UCAddin.LyncAddin.1
GUID: {A6A2383F-AD50-4D52-8110-3508275E77F7}
Load Behavior: 3
HKLM: 1
Location: C:\Program Files (x86)\Microsoft Office\Office15\UCAddin.dll
Boot Time (Milliseconds): 63
Name: Outlook Social Connector 2013
Description: Connects to social networking sites and provides people, activity, and status information.
ProgID: OscAddin.Connect
GUID: {2163EB1F-3FD9-4212-A41F-81D1F933597F}
Load Behavior: 3
HKLM: 1
Location: C:\Program Files (x86)\Microsoft Office\Office15\SOCIALCONNECTOR.DLL
Boot Time (Milliseconds): 62
Name: OneNote Notes about Outlook Items
Description: Adds Send to OneNote and Notes about this Item buttons to the command bar
ProgID: OneNote.OutlookAddin
GUID: {93E5752E-B889-47C5-8545-654EE2533C64}
Load Behavior: 3
HKLM: 1
Location: C:\Program Files (x86)\Microsoft Office\Office15\ONBttnOL.dll
Boot Time (Milliseconds): 16
Name: Conversation History Add-in for Microsoft Office 2013
Description: Conversation History Add-in for Microsoft Office 2013
ProgID: OcOffice.OcForms
GUID: {2CD5239C-7739-42F1-9C94-2A8E24A9BBD9}
Load Behavior: 3
HKLM: 0
Location: C:\Program Files (x86)\Microsoft Office\Office15\OcOffice.dll
Boot Time (Milliseconds): 62
Name: McAfee E-mail Scan Add-in
Description: Outlook Add-in for McAfee E-mail Scan
ProgID: mfeotlkaddin.scan
GUID: {6D51AC3F-7048-4C0F-9831-18E4F701EF86}
Load Behavior: 3
HKLM: 1
Location: C:\Windows\SysWow64\MfeOtlkAddin.dll
Boot Time (Milliseconds): 109
Name: Microsoft SharePoint Server Colleague Import Add-in
Description: The Add-in allows Microsoft SharePoint Server to import colleague suggestions based on your Outlook content
ProgID: ColleagueImport.ColleagueImportAddin
GUID: {EFEF7FDB-0CED-4FB6-B3BB-3C50D39F4120}
Load Behavior: 3
HKLM: 0
Location: C:\Program Files (x86)\Microsoft Office\Office15\ADDINS\ColleagueImport.dll
Boot Time (Milliseconds): 16
The most recent add-in error from the Event log is, which occurred on 10/27/2014:
ProgID: mfeotlkaddin.scan
GUID: {6D51AC3F-7048-4C0F-9831-18E4F701EF86}
Name: McAfee E-mail Scan Add-in
Description: Outlook Add-in for McAfee E-mail Scan
Load Behavior: 3
HKLM: 1
Location: c:\windows\syswow64\mfeotlkaddin.dll
Threshold Time (Milliseconds): 0
Time Taken (Milliseconds): 0
Disable Reason: The add-in caused Outlook to crash, but wasn't disabled because it is in the do not disable list. It wasn't disabled because it's in the always enable list.
Policy Exception (Allow List): 0