Applies To
Office Standard 2016 Office Professional 2016 Office Professional Plus 2016 Office Home and Business 2016 Office Home and Student 2016

Summary

This security update resolves a Microsoft Office remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2025-49699. 

Note: To apply this security update, you must have the release version of Microsoft Office 2016 installed on the computer.

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?)

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center. To install the update, follow the installation instructions on the download page.

More information

Security update deployment information

For deployment information about this update, see Deployments - Security Update Guide.

Security update replacement information

This security update replaces previously released update 4464538.

File hash information

File name

SHA256 hash

proof2016-kb4464583-fullfile-x86-glb.exe

A4159062B0E4D50D21A4BC2CAD564FDC9C35287E327F15482D340A0BBDD3D66B

proof2016-kb4464583-fullfile-x64-glb.exe

4E76AB857FB8ADB23F18F3476987BBF80581F023968413258AFADD2F2665D3F7

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following table. 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.

File name

File version

File size

Date

Time

Css7data.dll_1031

16.0.5508.1000

502,872

11-Jun-2025

08:10

Css7data.dll_1033

16.0.5508.1000

525,888

11-Jun-2025

08:10

Css7data.dll_1036

16.0.5508.1000

703,056

11-Jun-2025

08:10

Css7data.dll_1040

16.0.5508.1000

197,720

11-Jun-2025

08:11

Css7data.dll_1044

16.0.5508.1000

197,760

11-Jun-2025

08:11

Css7data.dll_1046

16.0.5508.1000

197,768

11-Jun-2025

08:11

Css7data.dll_3082

16.0.5508.1000

707,648

11-Jun-2025

08:10

Msgr3en.dll_1025

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1030

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1031

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1033

16.0.4684.1000

4,705,488

10-Jun-2025

12:59

Msgr3en.dll_1035

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1036

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1040

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1041

16.0.4849.1000

254,568

10-Jun-2025

13:01

Msgr3en.dll_1042

16.0.4684.1000

3,339,952

10-Jun-2025

22:54

Msgr3en.dll_1043

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1044

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1046

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_1049

16.0.4684.1000

413,392

10-Jun-2025

22:55

Msgr3en.dll_2052

3.0.1709.0

130,864

10-Jun-2025

22:55

Msgr3en.dll_2070

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.dll_3082

16.0.4684.1000

413,392

10-Jun-2025

22:54

Msgr3en.lex_1033

Not Applicable

3,788,603

10-Jun-2025

12:59

Msgr3en.lex_1036

Not Applicable

7,815,048

10-Jun-2025

22:54

Msgr3ge2.dll_2052

3.0.1709.0

130,864

10-Jun-2025

22:55

Msgren32.dll_1029

16.0.0.3

530,088

10-Jun-2025

22:54

Msgren32.dll_1038

16.0.0.6

375,464

10-Jun-2025

22:54

Mso.acl_1061

Not Applicable

5,772

10-Jun-2025

12:56

Msth3am.lex_1033

16.0.4684.1000

3,472,896

10-Jun-2025

12:59

Msthes3.dll_1025

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1026

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1027

16.0.4684.1000

310,008

10-Jun-2025

22:51

Msthes3.dll_1029

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1030

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1031

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1032

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1033

16.0.4684.1000

310,008

10-Jun-2025

12:59

Msthes3.dll_1035

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1036

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1037

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1038

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1040

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1043

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1044

16.0.4684.1000

310,000

10-Jun-2025

22:54

Msthes3.dll_1045

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1046

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1048

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1049

16.0.4684.1000

310,008

10-Jun-2025

22:55

Msthes3.dll_1050

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1051

16.0.4684.1000

310,008

10-Jun-2025

22:55

Msthes3.dll_1053

16.0.4684.1000

310,008

10-Jun-2025

22:55

Msthes3.dll_1055

16.0.4684.1000

310,008

10-Jun-2025

22:55

Msthes3.dll_1058

16.0.4684.1000

310,008

10-Jun-2025

22:55

Msthes3.dll_1060

16.0.4684.1000

310,008

10-Jun-2025

22:55

Msthes3.dll_1061

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1062

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1063

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_1081

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_2070

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_2074

16.0.4684.1000

310,008

10-Jun-2025

22:55

Msthes3.dll_3082

16.0.4684.1000

310,008

10-Jun-2025

22:54

Msthes3.dll_3098

16.0.4684.1000

310,008

10-Jun-2025

22:52

File name

File version

File size

Date

Time

Css7data.dll_1031

16.0.5508.1000

576,056

11-Jun-2025

08:10

Css7data.dll_1033

16.0.5508.1000

604,728

11-Jun-2025

08:10

Css7data.dll_1036

16.0.5508.1000

776,768

11-Jun-2025

08:11

Css7data.dll_1040

16.0.5508.1000

262,176

11-Jun-2025

08:11

Css7data.dll_1044

16.0.5508.1000

262,760

11-Jun-2025

08:11

Css7data.dll_1046

16.0.5508.1000

262,256

11-Jun-2025

08:11

Css7data.dll_3082

16.0.5508.1000

779,328

11-Jun-2025

08:11

Msgr3en.dll_1025

16.0.4288.1000

569,424

10-Jun-2025

22:54

Msgr3en.dll_1030

16.0.4288.1000

567,992

10-Jun-2025

22:55

Msgr3en.dll_1031

16.0.4288.1000

567,992

10-Jun-2025

22:54

Msgr3en.dll_1033

16.0.4480.1000

5,405,920

10-Jun-2025

13:00

Msgr3en.dll_1035

16.0.4288.1000

567,992

10-Jun-2025

22:55

Msgr3en.dll_1036

16.0.4288.1000

569,424

10-Jun-2025

22:55

Msgr3en.dll_1040

16.0.4288.1000

567,992

10-Jun-2025

22:55

Msgr3en.dll_1041

16.0.4849.1000

303,936

10-Jun-2025

13:02

Msgr3en.dll_1042

16.0.4288.1000

2,532,416

10-Jun-2025

22:55

Msgr3en.dll_1043

16.0.4288.1000

569,424

10-Jun-2025

22:55

Msgr3en.dll_1044

16.0.4288.1000

569,424

10-Jun-2025

22:55

Msgr3en.dll_1046

16.0.4288.1000

567,992

10-Jun-2025

22:55

Msgr3en.dll_1049

16.0.4288.1000

567,992

10-Jun-2025

22:55

Msgr3en.dll_2052

3.0.1709.0

150,656

10-Jun-2025

22:56

Msgr3en.dll_2070

16.0.4288.1000

567,992

10-Jun-2025

22:55

Msgr3en.dll_3082

16.0.4288.1000

567,992

10-Jun-2025

22:55

Msgr3en.lex_1033

Not Applicable

3,788,603

10-Jun-2025

13:00

Msgr3en.lex_1036

Not Applicable

7,815,048

10-Jun-2025

22:55

Msgr3ge2.dll_2052

3.0.1709.0

150,656

10-Jun-2025

22:56

Msgren32.dll_1029

16.0.0.3

659,112

10-Jun-2025

22:55

Msgren32.dll_1038

16.0.0.6

427,688

10-Jun-2025

22:55

Mso.acl_1061

Not Applicable

5,772

10-Jun-2025

12:57

Msth3am.lex_1033

16.0.4651.1000

3,472,896

10-Jun-2025

13:00

Msthes3.dll_1025

16.0.4288.1000

410,216

10-Jun-2025

22:54

Msthes3.dll_1026

16.0.4288.1000

410,216

10-Jun-2025

22:54

Msthes3.dll_1027

16.0.4288.1000

410,216

10-Jun-2025

22:52

Msthes3.dll_1029

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1030

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1031

16.0.4288.1000

410,216

10-Jun-2025

22:54

Msthes3.dll_1032

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1033

16.0.4288.1000

410,216

10-Jun-2025

13:00

Msthes3.dll_1035

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1036

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1037

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1038

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1040

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1043

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1044

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1045

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1046

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1048

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1049

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1050

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1051

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1053

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_1055

16.0.4288.1000

408,264

10-Jun-2025

22:55

Msthes3.dll_1058

16.0.4288.1000

408,776

10-Jun-2025

22:56

Msthes3.dll_1060

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1061

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1062

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1063

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_1081

16.0.4288.1000

408,776

10-Jun-2025

22:55

Msthes3.dll_2070

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_2074

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_3082

16.0.4288.1000

410,216

10-Jun-2025

22:55

Msthes3.dll_3098

16.0.4288.1000

410,216

10-Jun-2025

22:53

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