New Outlook Web App 2013 features The guide attached informs you how to view conversations by email as well as how to ignore emails.
Performance and synchronization issues with folders in secondary mailbox in Outlook Perfomance issues may be noticed with folders in secondary Microsoft Exchange Server mailboxes in Outlook 2016, 2013, 2010 and 2007 versions.
Issues around shared calendars and folders in Outlook Outlook performance issues when many shared folders or mailboxes are open.
Shared Mailbox folders visibility/loading issues in Outlook All the folders of a mailbox do not load or appear in Outlook.
Members of shared mailboxes or delegates with ‘Send As’ rights to user mailboxes are unable to send emails This issues occurs when using an autocomplete entry that already resides in the Outlook Client auto-complete cache.
‘Send a Meeting’ within Skype For Business does not work alongside Outlook 'Send a meeting' invite from Skype for Business option does not work for users who have outlook configured on their local machine