HowTo-Outlook

A Rollup Update has been released for Outlook 2010. This is a non-security update which fixes the 3 attachment issues that were introduced with the June 2017 update (KB3203467);

• When you open an attachment whose file name includes an ellipsis (…) or an exclamation point (!), the files are blocked and you receive a warning message.
• If an email message includes an attached email message, and the attached email message’s subject line includes an unsafe file name extension, the email attachment is blocked for recipients.
• You receive an error message when you open attachments in an email message, a contact, or a task that’s formatted as Rich Text.

Update July 11:
Due to new issues found with this update, it is no longer available. An updated fix or a completely new fix will be released soon.

View: Download information for KB4011042

Note: This update can be installed via Microsoft Update and updates Outlook to version 14.0.7183.5002.

Cumulative Update 6 for Exchange 2016 is now available for direct download. It contains 8 documented new fixes or improvements, various new features and all previously released fixes and security updates for Exchange 2016.

Notable new features, fixes and improvements are:

• Improved support for TLS 1.2.
• Sent Items Behavior Control.
• Original Folder Item Recovery.
• KB4024650: Emoji is displayed as question marks in iOS clients in an Exchange Server environment.
• KB4024649: The Read or Unread flag isn’t synchronized correctly after you turn off an ActiveSync device overnight in Exchange Server

This release includes new updates to the Active Directory Schema.

Compatibility validation with .Net 4.7 is still pending for this release but so far, no issues have been found. However, .Net 4.7 is not supported until the validation has been completed and official support has been announced.

Download: Cumulative Update 6 for Exchange Server 2016 (KB4012108)
Download: Exchange Server 2016 CU6 UM Language Packs
View: Description of Cumulative Update 6 for Exchange Server 2016
View: Blog post of the Exchange Team about CU6 for Exchange Server 2016

Cumulative Update 17 for Exchange 2013 is now available for direct download. It contains 5 documented new fixes or improvements and all previously released fixes and security updates for Exchange 2013.

Notable fixes and improvements are:

• This update includes the latest time zone updates.
• KB4024650: Emoji is displayed as question marks in iOS clients in an Exchange Server environment.
• KB4024646:  “Insufficient access rights” error when you run setup.exe as member of “Delegated Setup” group in Exchange Server 2013

This release does not include new updates to the Active Directory Schema.

Compatibility validation with .Net 4.7 is still pending for this release but so far, no issues have been found. However, .Net 4.7 is not supported until the validation has been completed and official support has been announced.

Download: Cumulative Update 17 for Exchange Server 2013 (KB4012114)
Download: Exchange Server 2013 CU17 UM Language Packs
View: Description of Cumulative Update 17 for Exchange Server 2013
View: Blog post of the Exchange Team about CU17 for Exchange Server 2013

After applying the June update for Outlook 2007, 2010, 2013 or Outlook 2016 (MSI) some attachments may be blocked from being opened. There are two issues here;

• Attachments could get blocked as they are deemed “potentially unsafe attachments” even when they don’t have an unsafe file extension (like pdf, docx, xlsx).

  
  The blocked attachments are mentioned in the Infobar.

  This issue applies to files that have two dots or an exclamation mark in front of their file extension;
  -test..txt
  -test!.txt

• Attachments that are embedded (with the file icon shown in the message body) in an RTF formatted message, calendar item, contact item or task item can’t be opened. Trying to do so produces the error;
  • The program used to create this object is Outlook. That program is either not installed on your computer or it is not responding. To edit this object, install Outlook or ensure that any dialog boxes in Outlook are closed.

Error when trying to open an embedded attachment after applying the June 2017 update.

Current workarounds are;

• For the first issue; Download the files via web mail. Exchange and Outlook.com users can use Outlook on the Web (OWA) for this, Gmail users can use the Gmail website, etc…
• For the second issue, you can save the files to your Desktop (drag & drop also works) and open the files from there.
• Uninstall the June update for your Outlook version. Please note that this is a security update, so uninstalling the update is only recommended when you know the risks and can’t use the other workarounds.
  • Outlook 2007: KB3191898
  • Outlook 2010: KB3203467
  • Outlook 2013: KB3191938
  • Outlook 2016: KB3191932

For further information and descriptions of other issues regarding these updates also see; Outlook known issues in the June 2017 security updates.

A Security Update has been released for Outlook 2016. In addition to resolving the vulnerabilities, it also contains 15 documented improvements and fixes.

Most notable fixes and improvements are:

• Resolves the vulnerabilities mentioned in CVE-2017-8506, CVE-2017-8507, and CVE-2017-8508 which could allow remote code execution if a user opens a specially crafted Office file or email message.
• If you have a profile that has a Microsoft SharePoint calendar in Outlook 2016 and the calendar is synchronizing in the background, Outlook 2016 may crash.
• After a delegate views a rejected meeting, the declined meeting appears in the calendar again if the delegate has not rejected the meeting.

Office 365 subscribers have also received the following feature updates;

• Focused Inbox
• Quickly access the Office 365 Groups you use most
• Insert recent links
• Actionable messages (developers feature)
• Support for on-premises SharePoint Server attachments
• Business classifications for Office 365 Groups

View: Download information for KB3191932

Note: This update can be installed via Microsoft Update or the Update Now button when you are using Office 365 and updates Outlook to version 16.0.4549.1002 (msi-based installation) or 16.0.8201.2102 (Office 365 based installation) or 16.0.7766.2092 (Office 365 Deferred Channel installation).