This article describes update 4018326 for Microsoft Outlook 2016 that was released on April 3, 2018. This update has a prerequisite.

Be aware that the update on 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. (How to determine?)

Improvements and fixes

This update fixes the following issues:

  • The custom forms with Visual Basic Script (VBScript) doesn't run in shared calendars in Outlook.

  • You see unexpected PIN or password prompts when you receive signed attachments that use strong protection.

  • When you reply to an email, if a recipient's display name matches the sender's display name, the recipient name may be removed from the recipient's list.

  • When you add users to an empty Distribution List, you don't immediately see the changes in the address book in Outlook 2016 because of a delay.

  • When you connect to Microsoft Exchange Server through a metered network, you see that favorite folders disappear from the navigation pane.

  • You see that authentication prompts appear behind the active Outlook window and cannot be accessed.

This update also contains the following improvements:

  • Adds support for the Sync Slider so that you can specify a long span time to synchronize mails that span 3 years or more in Outlook 2016.

    Note To enable this function, see KB3115009 for more information.

  • Translates some terms in multiple languages to make sure that the meaning is accurate.

How to download and install the update

Microsoft Update

Use Microsoft Update to automatically download and install the update.

Download Center

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

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.

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.

Update information

Prerequisites

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

Restart information

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

More information

To determine whether your Office installation is Click-to-Run or MSI-based, follow these steps:

  1. Start an Office 2016 application.

  2. On the File menu, select Account.

  3. For Office 2016 Click-to-Run installations, an Update Options item is displayed. For MSI-based installations, the Update Options item isn't displayed.

Office 2016 Click-to-Run installation

MSI-based Office 2016

The screenshot for Word click to run

The screenshot for Word MSI

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 KB4018326, 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 KB4018326, 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 KB4018326, and then select Uninstall.

References

Learn about the standard terminology that's used to describe Microsoft software updates.

The Office System TechCenter contains the latest administrative updates and strategic deployment resources for all versions of Office.

File information

x86

outlook-x-none.msp file information

File identifier

File name

File version

File size

Date

Time

Contab32.dll

Contab32.dll

16.0.4678.1000

153,312

14-Mar-2018

07:14

Dlgsetp.dll

Dlgsetp.dll

16.0.4678.1000

109,784

14-Mar-2018

07:14

Envelope.dll

Envelope.dll

16.0.4678.1000

189,688

14-Mar-2018

07:14

Mapiph.dll

Mapiph.dll

16.0.4678.1000

333,104

14-Mar-2018

07:14

Mapir.dll_1033

Mapir.dll

16.0.4672.1000

1,280,712

12-Mar-2018

23:07

Mimedir.dll

Mimedir.dll

16.0.4666.1000

446,120

12-Mar-2018

23:08

Olmapi32.dll

Olmapi32.dll

16.0.4678.1000

4,794,096

14-Mar-2018

07:14

Omsmain.dll

Omsmain.dll

16.0.4654.1000

753,392

12-Mar-2018

23:08

Omsxp32.dll

Omsxp32.dll

16.0.4630.1000

261,400

12-Mar-2018

23:08

Outllibr.dll_1033

Outllibr.dll

16.0.4666.1000

7,495,888

12-Mar-2018

23:07

Outlmime.dll

Outlmime.dll

16.0.4678.1000

611,584

14-Mar-2018

07:14

Outlook.exe

Outlook.exe

16.0.4678.1000

23,228,088

14-Mar-2018

07:14

Outlook.hol_1033

Outlook.hol

Not applicable

1,335,562

12-Mar-2018

23:07

Outlph.dll

Outlph.dll

16.0.4666.1000

358,168

12-Mar-2018

23:08

Outlvba.dll

Outlvba.dll

16.0.4678.1000

76,520

14-Mar-2018

07:14

Pstprx32.dll

Pstprx32.dll

16.0.4678.1000

1,396,416

14-Mar-2018

07:14

Rm.dll

Rm.dll

16.0.4666.1000

90,816

12-Mar-2018

23:08

Scnpst32.dll

Scnpst32.dll

16.0.4678.1000

460,608

14-Mar-2018

07:14

Scnpst64.dll

Scnpst64.dll

16.0.4666.1000

472,400

12-Mar-2018

23:08

Scnpst64c.dll

Scnpst64c.dll

16.0.4666.1000

673,632

12-Mar-2018

23:08

x64

outlook-x-none.msp file information

File identifier

File name

File version

File size

Date

Time

Contab32.dll

Contab32.dll

16.0.4678.1000

201,440

14-Mar-2018

07:15

Dlgsetp.dll

Dlgsetp.dll

16.0.4666.1000

138,448

12-Mar-2018

23:11

Envelope.dll

Envelope.dll

16.0.4678.1000

249,080

14-Mar-2018

07:15

Mapiph.dll

Mapiph.dll

16.0.4678.1000

482,096

14-Mar-2018

07:15

Mapir.dll_1033

Mapir.dll

16.0.4672.1000

1,280,720

12-Mar-2018

23:10

Mimedir.dll

Mimedir.dll

16.0.4678.1000

601,264

14-Mar-2018

07:15

Olappt.fae

Olappt.fae

16.0.4366.1000

134,480

12-Mar-2018

23:11

Olmapi32.dll

Olmapi32.dll

16.0.4678.1000

6,629,096

14-Mar-2018

07:15

Omsmain.dll

Omsmain.dll

16.0.4630.1000

1,004,264

12-Mar-2018

23:11

Omsxp32.dll

Omsxp32.dll

16.0.4660.1000

352,024

12-Mar-2018

23:11

Outllibr.dll_1033

Outllibr.dll

16.0.4666.1000

7,495,888

12-Mar-2018

23:10

Outlmime.dll

Outlmime.dll

16.0.4678.1000

783,608

14-Mar-2018

07:15

Outlook.exe

Outlook.exe

16.0.4678.1000

35,036,344

14-Mar-2018

07:15

Outlook.hol_1033

Outlook.hol

Not applicable

1,335,562

12-Mar-2018

23:10

Outlph.dll

Outlph.dll

16.0.4666.1000

429,336

12-Mar-2018

23:11

Outlvba.dll

Outlvba.dll

16.0.4678.1000

97,000

14-Mar-2018

07:15

Pstprx32.dll

Pstprx32.dll

16.0.4678.1000

2,583,744

14-Mar-2018

07:15

Rm.dll

Rm.dll

16.0.4666.1000

110,784

12-Mar-2018

23:11

Scnpst32.dll

Scnpst32.dll

16.0.4666.1000

610,632

12-Mar-2018

23:11

Scnpst64.dll

Scnpst64.dll

16.0.4666.1000

614,224

12-Mar-2018

23:11

Scnpst64c.dll

Scnpst64c.dll

16.0.4666.1000

814,424

12-Mar-2018

23:11

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