This turns out to be a big problem All of the Outlook patches from Tuesday designed to address this:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11774 have the potential to break add-ins. Microsoft is aware. These are: https://support.microsoft.com/help/4011196 (Outlook 2010) https://support.microsoft.com/help/4011178 (Outlook 2013) https://support.microsoft.com/help/4011162 (Outlook 2016) Test carefully before you roll these out! -----Original Message----- From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com] On Behalf Of Ferrel, Patrick Sent: Thursday, October 12, 2017 11:36 AM To: exchange@lists.myITforum.com Subject: [Exchange] KB4011196 breaks Out 'n About! Hello all, I've been banging my head against the wall all morning trying to figure out why the Out 'n About! add-in isn't working for some users. It turns out just released patches break it. Uninstalling KB4011196 fixed it for us but YMMV. https://intelligentconcepts.com/microsofts-october-security-updates-breaks-outn-about-for-outlook-status-board-view-kb4011196-kb2553338-andor-kb2837599/ CONFIDENTIALITY NOTICE: This electronic mail transmission and any documents, files, or previous e-mail messages attached to it may contain confidential information and are intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, or a person responsible for delivering such information to the intended recipient, you are hereby notified that any further review, disclosure, copying, dissemination, distribution, or use of any of the information contained in or attached to this e-mail transmission is strictly prohibited.If you have received this message in error, please notify the sender immediately by e-mail, discard any paper copies, and delete all electronic files of the message. Thank you for your cooperation.