This article describes update KB3178666 for Microsoft Office 2016, which was released on April 4, 2017. 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 includes the following improvements and fixes:

You do one of the following:

  • Start an Office application.

  • Open an information rights management (IRM)–protected document or email message.

  • Try to protect a document or email message by using IRM.

  • Sign in to an Office application.

In this situation, the related Office application crashes. This issue occurs because Windows verifies that the data sent by the Azure RMS service is valid and is coming from RMS. If Windows is configured to use a proxy server for HTTPS connections, this validation process may fail in such a way as to cause Office applications to crash. For more information, see KB4012623.

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 what 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

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

Restart informationYou 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 updateWindows 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 KB3178666, 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 KB3178666, 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 KB3178666, 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 informationThe global version of this update has the file attributes (or later file attributes) that are listed in the following table. 

x64

File identifier

File name

File version

File size

Date

Time

Armsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Armsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

29,568

14-Mar-2017

05:29

Bgmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Bgmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

35,712

14-Mar-2017

05:29

Brmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Brmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

34,176

14-Mar-2017

05:29

Camsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Camsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

36,224

14-Mar-2017

05:29

Cnmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Cnmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

19,328

14-Mar-2017

05:29

Csmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Csmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,128

14-Mar-2017

05:29

Damsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Damsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

33,152

14-Mar-2017

05:29

Demsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Demsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

38,784

14-Mar-2017

05:29

Elmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Elmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

38,784

14-Mar-2017

05:29

Enusmsipcmuidll.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Enusmsipcmuidll.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Esmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Esmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

36,736

14-Mar-2017

05:29

Etmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Etmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

31,104

14-Mar-2017

05:29

Eumsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Eumsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

35,200

14-Mar-2017

05:29

Fimsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Fimsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

33,152

14-Mar-2017

05:29

Frmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Frmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

37,248

14-Mar-2017

05:29

Glmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Glmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

35,200

14-Mar-2017

05:29

Hemsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Hemsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

28,032

14-Mar-2017

05:29

Himsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Himsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

33,152

14-Mar-2017

05:29

Hrmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Hrmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2456.0

33,664

14-Mar-2017

05:29

Humsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Humsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

35,200

14-Mar-2017

05:29

Idmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Idmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Ipcsecprocdll.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Ipcsecprocdll.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2456.0

1,081,808

15-Mar-2017

05:17

Itmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Itmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

35,712

14-Mar-2017

05:29

Jamsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Jamsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

23,936

14-Mar-2017

05:29

Kkmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Kkmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Komsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Komsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2456.0

23,424

14-Mar-2017

05:29

Ltmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Ltmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,128

14-Mar-2017

05:29

Lvmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Lvmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

34,688

14-Mar-2017

05:29

Msipcdll.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Msipcdll.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2456.0

2,359,160

15-Mar-2017

05:17

Msmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Msmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

33,152

14-Mar-2017

05:29

Nlmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Nlmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

36,736

14-Mar-2017

05:29

Nomsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Nomsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Plmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Plmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

36,224

14-Mar-2017

05:29

Ptmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Ptmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

34,176

14-Mar-2017

05:29

Romsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Romsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

34,688

14-Mar-2017

05:29

Rumsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Rumsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

34,176

14-Mar-2017

05:29

Skmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Skmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

33,664

14-Mar-2017

05:29

Slmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Slmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Sr_cyrl_bamsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Sr_cyrl_bamsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

33,152

14-Mar-2017

05:29

Sr_cyrl_csmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Sr_cyrl_csmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Sr_cyrl_rsmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Sr_cyrl_rsmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,128

14-Mar-2017

05:29

Sr_latn_csmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Sr_latn_csmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Sr_latn_rsmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Sr_latn_rsmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Svmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Svmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,640

14-Mar-2017

05:29

Thmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Thmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

32,128

14-Mar-2017

05:29

Trmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Trmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

33,664

14-Mar-2017

05:29

Twmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Twmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

19,840

14-Mar-2017

05:29

Ukmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Ukmsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

34,176

14-Mar-2017

05:29

Vimsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

Vimsipcmui.8f104aa0_c9dd_44ce_95a7_6ec951e569a4

1.0.2284.0

35,712

14-Mar-2017

05:29


x86

File identifier

File name

File version

File size

Date

Time

Sr_cyrl_rsmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Sr_cyrl_rsmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

1.0.2284.0

32,128

14-Mar-2017

05:25

Sr_latn_rsmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Sr_latn_rsmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

1.0.2284.0

32,640

14-Mar-2017

05:25

Ipcsecprocdll.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Ipcsecproc.dll

1.0.2456.0

1,007,568

15-Mar-2017

05:17

Msipcdll.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll

1.0.2456.0

1,721,208

15-Mar-2017

05:17

Armsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

29,568

14-Mar-2017

05:25

Bgmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

35,712

14-Mar-2017

05:25

Brmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

34,176

14-Mar-2017

05:25

Camsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

36,224

14-Mar-2017

05:25

Cnmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

19,328

14-Mar-2017

05:25

Csmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,128

14-Mar-2017

05:25

Damsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

33,152

14-Mar-2017

05:25

Demsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

38,784

14-Mar-2017

05:25

Elmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

38,784

14-Mar-2017

05:25

Enusmsipcmuidll.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,640

14-Mar-2017

05:25

Esmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

36,736

14-Mar-2017

05:25

Etmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

31,104

14-Mar-2017

05:25

Eumsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

35,200

14-Mar-2017

05:25

Fimsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

33,152

14-Mar-2017

05:25

Frmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

37,248

14-Mar-2017

05:25

Glmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

35,200

14-Mar-2017

05:25

Hemsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

28,032

14-Mar-2017

05:25

Himsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

33,152

14-Mar-2017

05:25

Hrmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2456.0

33,664

14-Mar-2017

05:25

Humsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

35,200

14-Mar-2017

05:25

Idmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,640

14-Mar-2017

05:25

Itmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

35,712

14-Mar-2017

05:25

Jamsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

23,936

14-Mar-2017

05:25

Kkmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,640

14-Mar-2017

05:25

Komsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2456.0

23,424

14-Mar-2017

05:25

Ltmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,128

14-Mar-2017

05:25

Lvmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

34,688

14-Mar-2017

05:25

Msmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

33,152

14-Mar-2017

05:25

Nlmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

36,736

14-Mar-2017

05:25

Nomsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,640

14-Mar-2017

05:25

Plmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

36,224

14-Mar-2017

05:25

Ptmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

34,176

14-Mar-2017

05:25

Romsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

34,688

14-Mar-2017

05:25

Rumsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

34,176

14-Mar-2017

05:25

Skmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

33,664

14-Mar-2017

05:25

Slmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,640

14-Mar-2017

05:25

Sr_cyrl_bamsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

33,152

14-Mar-2017

05:25

Sr_cyrl_csmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,640

14-Mar-2017

05:25

Sr_latn_csmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,640

14-Mar-2017

05:25

Svmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,640

14-Mar-2017

05:25

Thmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

32,128

14-Mar-2017

05:25

Trmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

33,664

14-Mar-2017

05:25

Twmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

19,840

14-Mar-2017

05:25

Ukmsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

34,176

14-Mar-2017

05:25

Vimsipcmui.7e2a9535_9135_4b08_bd1a_4b4866c7650a

Msipc.dll.mui

1.0.2284.0

35,712

14-Mar-2017

05:25

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Thank you for your feedback!

×