April 2, 2019, update for Outlook 2016 (KB4464502)

This article describes update 4464502 for Microsoft Outlook 2016 that was released on April 2, 2019.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home (see What version of Office am I using?).

• If you type an incorrect set of credentials, and then cancel a password prompt, Outlook may continue to send requests with the incorrect set of credentials. This could cause an account lockout. For more information, see KB4464517.
• In certain scenarios, you cannot attach a file that has non-ASCII characters in the file name.
• Improves translations for Shared folders and adds translations for all-day event update for all languages.
  Note To enable this improvement, you also need to install 4462241 together with this update.
  

Microsoft Update

Use Microsoft Update to automatically download and install the update.

Download Center

This update is also available for manual download and installation from the Microsoft Download Center.

• Download update 4464502 for 32-bit version of Outlook 2016
• Download update 4464502 for 64-bit version of Outlook 2016

If you're not sure which platform (32-bit or 64-bit) you're running, see Am I running 32-bit or 64-bit Office? Additionally, see more information about how to download Microsoft support files.

Virus-scan claim

Microsoft scanned this file for viruses by using the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to it.

Prerequisites

To apply this update, you must have Microsoft Office 2016 installed.

Restart information

You may have to restart the computer after you install this update.

How to uninstall this update

Windows 10

1. Go to Start, enter View Installed Updates in the Search Windows box, and then press Enter.
2. In the list of updates, locate and select KB4464502, and then select Uninstall.

Windows 8 and Windows 8.1

1. Swipe in from the right edge of the screen, and then select Search. If you're using a mouse, point to the lower-right corner of the screen, and then select Search.
2. Enter windows update, select Windows Update, and then select Installed Updates.
3. In the list of updates, locate and select KB4464502, and then select Uninstall.

Windows 7

1. Go to Start, enter Run, and then select Run.
2. Enter Appwiz.cpl, and then select OK.
3. Select View installed updates.
4. In the list of updates, locate and select KB4464502, and then select Uninstall.