The July 2015 update for Outlook 2013 takes care of a few issues. The issue I'm always asked about is the lack of email addresses in message headers and I’m happy to report that it’s fixed in this months update.
When you reply, reply all, or forward an email message, the email header only displays the display names of the recipients, and does not display their email addresses. You can change this behavior using this registry key:
Value: 0 = show display names and email addresses, 1 = display names only (default behavior)
Other issues fixed include:
After you change the language for Lync 2013 or Skype for Business, they may stop responding.
When you create an email item based on a form and set a flag such as a Follow Up flag or a High Importance flag on the item then close the item, you are not prompted for a dialog box to save the item, and the tag is not saved as expected.
If you use OAuth to authenticate Microsoft Exchange, the connection status may become disconnected instead of displaying an OAuth credential prompt.
After a rule moves an email message that you send out to a folder, the legDN address of your account instead of the display name appears in the From field of the email message.
When you double-click a timeslot in the schedule view of a shared calendar in Outlook 2013, an appointment item instead of a meeting item is created. You’ll need to set a registry value to change this behavior.
Another calendar issue: Meeting responses such as Accept, Decline, and Tentative are not displayed correctly on the Tracking tab.
When you use the object model method OpenSharedFolder to open a sharing online calendar in Outlook 2013, you receive an error E_FAIL (0x80004005) if the calendar contains appointments.
You cannot delete an iCalendar (.ics) or a vCalendar (.vcs) calendar for an Exchange ActiveSync (EAS) profile.
After you enter incorrect credentials multiple times for a mailbox, you have to enter the correct credential two times.
When you run a quick step to apply a retention policy to an item in Outlook 2013, the retention policy is still applied to the item even though the retention policy is deleted.
For more information, see July 14, 2015, update for Outlook 2013 (KB3054940)This update will be pushed out to most users over the next few days.