Client has MS Dynamics CRM Outlook Plugin. On one specific machine, Outlook crashes when clicking on pretty much anything. Lots of uninstall/reinstalls later:
Dynamics CRM 2011: Troubleshoot Outlook Crashes
If you experience Outlook crashes with the CRM Client for Outlook installed and using Internet Explorer 9, please perform the following steps:
Update the Dynamics CRM for Outlook Client to Update Rollup 11 from here
* MIT Update – As of publishing, the current rollup is 13 available here (also when loading Outlook for the first time after installing the rollup, have patience, it takes a while)
Disable the Microsoft Outlook Social Connector Add-in from COM Add-Ins in Outlook
Add the following registry entry on the Outlook Client:
Click Start, click Run, type regedit, and then press ENTER.
Locate and then click on the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl
On the Edit menu, point to New, and then click Key.
Type FEATURE_USE_LEGACY_JSCRIPT, and then press ENTER.
Right-click FEATURE_USE_LEGACY_JSCRIPT, point to New, and then click DWORD Value.
Type outlook.exe, and then press ENTER.
Right-click outlook.exe, and then click Modify.
In the Value data box, type 1, and then click OK.
Exit Registry Editor.
It worked for a while and the problem happened again. So we downgraded Office from 2013 to 2010 and it works fine now.