This month's security update includes fixes for the following nonsecurity issues. Office subscribers will have these updates installed automatically.
- Add OST corruption events.
- Translate some terms so that the meaning is accurate.
- Fixes an issue with corrupt forms cache. When a message is sent programmatically, the addresses are not added to the autocomplete cache. A registry edit can change this behavior.
- Annoying, unexpected and unnecessary authentication prompts are displayed when starting Outlook.
- After an item in the search results is moved, the item remains in the results list.
- You can't open public folders in Outlook 2016. This issue commonly affects Office 365 subscribers.
- When you search items in the current folder, preview doesn't work when using Exchange Server 2013 and earlier if the Message Preview is set to 3 Lines.
- When you move a junk email message out of the Junk E-Mail folder, and try to download messages again, the email message is moved back to the Junk E-Mail folder.
- Outlook crashes randomly when you open a meeting request. (Mine crashes on more than meeting requests.)
- When you edit an appointment or meeting, the Browse Web Locations option is unavailable and you can't attach some files.
- If you disable cached mode and delete the ost files formerly used by the Exchange accounts, Outlook can't send email messages, and the email messages are stuck in the Outbox folder.
- Non-default Retention policy applied to Shared mailboxes does not apply to subfolders that are created by users when in Cached Exchange mode. Messages moved to those subfolders inherit the parent folder's retention policy instead of the policy that is set by the user.
- When you select the Preview file button for a PDF file of an email message, the PDF file can't be previewed.
- When you disable read receipt functionality and receive email messages that have a requested SMIME receipt, local copies of email messages bloat the Versions folder on the server that is running Exchange Server.
- Attachments are rearranged, deleted, duplicated, or corrupted.
- You can now specify the default editor format for calendar items by editing the registry.
More information is available at MS16-107: Description of the security update for Outlook 2016: September 13, 2016 For all Microsoft Office updates, see MS16-107: Security update for Microsoft Office: September 13, 2016