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?).

Improvements and fixes

This update contains the following fixes and improvement:

  • 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.

How to download and install the 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.

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.

Update information

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.

More information

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.

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.


x64

outlook-x-none.msp file information

File identifier

File name

File version

File size

Date

Time

Contab32.dll

Contab32.dll

16.0.4834.1000

203,600

13-Mar-2019

00:35

Dlgsetp.dll

Dlgsetp.dll

16.0.4834.1000

139,384

13-Mar-2019

00:35

Envelope.dll

Envelope.dll

16.0.4834.1000

249,192

13-Mar-2019

00:35

Mapiph.dll

Mapiph.dll

16.0.4834.1000

481,696

13-Mar-2019

00:35

Mapir.dll_1033

Mapir.dll

16.0.4723.1000

1,280,744

11-Mar-2019

23:05

Mimedir.dll

Mimedir.dll

16.0.4834.1000

601,376

13-Mar-2019

00:35

Olappt.fae

Olappt.fae

16.0.4687.1000

134,464

11-Mar-2019

23:05

Olmapi32.dll

Olmapi32.dll

16.0.4834.1000

6,654,608

13-Mar-2019

00:35

Omsmain.dll

Omsmain.dll

16.0.4783.1000

1,004,368

11-Mar-2019

23:05

Omsxp32.dll

Omsxp32.dll

16.0.4783.1000

352,136

11-Mar-2019

23:05

Outllibr.dll_1033

Outllibr.dll

16.0.4828.1000

7,496,304

11-Mar-2019

23:05

Outlmime.dll

Outlmime.dll

16.0.4834.1000

786,592

13-Mar-2019

00:35

Outlook.exe

Outlook.exe

16.0.4834.1000

35,084,888

13-Mar-2019

00:35

Outlook.hol_1033

Outlook.hol

Not applicable

1,336,360

11-Mar-2019

23:05

Outlph.dll

Outlph.dll

16.0.4696.1000

429,344

11-Mar-2019

23:05

Outlvba.dll

Outlvba.dll

16.0.4834.1000

96,904

13-Mar-2019

00:35

Pstprx32.dll

Pstprx32.dll

16.0.4834.1000

2,584,672

13-Mar-2019

00:35

Recall.dll

Recall.dll

16.0.4759.1000

76,088

11-Mar-2019

23:05

Rm.dll

Rm.dll

16.0.4696.1000

110,776

11-Mar-2019

23:05

Scnpst32.dll

Scnpst32.dll

16.0.4834.1000

528,312

13-Mar-2019

00:35

Scnpst64.dll

Scnpst64.dll

16.0.4834.1000

531,400

13-Mar-2019

00:35

Scnpst64c.dll

Scnpst64c.dll

16.0.4834.1000

729,552

13-Mar-2019

00:35


x86

outlook-x-none.msp file information

File identifier

File name

File version

File size

Date

Time

Contab32.dll

Contab32.dll

16.0.4834.1000

154,968

13-Mar-2019

00:35

Dlgsetp.dll

Dlgsetp.dll

16.0.4834.1000

111,432

13-Mar-2019

00:35

Envelope.dll

Envelope.dll

16.0.4834.1000

189,592

13-Mar-2019

00:35

Mapiph.dll

Mapiph.dll

16.0.4795.1000

333,224

11-Mar-2019

23:03

Mapir.dll_1033

Mapir.dll

16.0.4723.1000

1,280,712

11-Mar-2019

23:02

Mimedir.dll

Mimedir.dll

16.0.4834.1000

446,032

13-Mar-2019

00:35

Olmapi32.dll

Olmapi32.dll

16.0.4834.1000

4,813,456

13-Mar-2019

00:35

Omsmain.dll

Omsmain.dll

16.0.4702.1000

753,392

11-Mar-2019

23:03

Omsxp32.dll

Omsxp32.dll

16.0.4810.1000

261,520

11-Mar-2019

23:03

Outllibr.dll_1033

Outllibr.dll

16.0.4828.1000

7,496,520

11-Mar-2019

23:02

Outlmime.dll

Outlmime.dll

16.0.4834.1000

614,048

13-Mar-2019

00:35

Outlook.exe

Outlook.exe

16.0.4834.1000

23,277,656

13-Mar-2019

00:35

Outlook.hol_1033

Outlook.hol

Not applicable

1,336,360

11-Mar-2019

23:02

Outlph.dll

Outlph.dll

16.0.4696.1000

358,680

11-Mar-2019

23:03

Outlvba.dll

Outlvba.dll

16.0.4834.1000

76,424

13-Mar-2019

00:35

Pstprx32.dll

Pstprx32.dll

16.0.4834.1000

1,398,072

13-Mar-2019

00:35

Rm.dll

Rm.dll

16.0.4702.1000

90,816

11-Mar-2019

23:03

Scnpst32.dll

Scnpst32.dll

16.0.4834.1000

422,848

13-Mar-2019

00:35

Scnpst64.dll

Scnpst64.dll

16.0.4834.1000

434,120

13-Mar-2019

00:35

Scnpst64c.dll

Scnpst64c.dll

16.0.4834.1000

633,296

13-Mar-2019

00:35


References

Learn about the standard terminology that is used to describe Microsoft software updates. The Office System TechCenter contains the latest administrative updates and strategic deployment resources for all versions of Office.

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