As of March 1 2017, Office 2013 is no longer available for download in the Office 365 portal or at office.microsoft.com. Direct downloads are available.
Outlook 2013's Mail applet will not open from the Control Panel following the June 2016 updates. Click-to-run installations are affected on all operating systems.
Office 2013 SP1 is available and should be automatically installed for Home Premium and ProPlus Click to Run subscriptions.
After installing the November security updates, Outlook 2013 users had issues connecting to Exchange server 2007. These problems are fixed by the December 13 2013 update.
Where is Microsoft Outlook data stored? How to find the files and settings you need to backup.
After the latest round of Office 2013 updates, some IMAP users are reporting their Inbox is not listed in their profile, is empty, or their IMAP accounts aren't syncing.
Solution for missing navigation bar in Outlook 2013 after installing September 2013 updates.
Outlook 2013's Notes have 2 rows of tool bars.
One of the new features in Office 2013 is Hardware Graphics Acceleration which is supposed to improve performance. It doesn't always work well on older computers (and even some new ones). Symptoms include blurred text, cursor hangs randomly, and Outlook freezing for a few seconds (or longer).
Outlook 2013 changes how IMAP accounts are handled. Instead of using two data files, Outlook 2013 uses an .ost file for IMAP accounts and stores appointments, tasks, contacts, and notes in the ost, in folders labeled "(This computer only)".