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Summary

This security update resolves a Microsoft Office Remote Code Execution Vulnerability. To learn more about the vulnerability, see the following security advisories:

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?). 

Improvements and fixes

This update adds security enhancements for Access that provide a more secure version of the signature scheme for Visual Basic for Applications (VBA) projects. For more information, see Upgrade signed Office VBA macro projects to V3 signature.

Note: To make this improvement to take effect in Access, you have to install KB 4493188 and KB 4493153 together with this update.

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. Follow the installation instructions on the download page to install the update.

More information

Security update deployment information

For deployment information about this update, see Security update deployment information: March 9, 2021 (KB5001208).

Security update replacement information

This security update replaces previously released security update 4484466.

File hash information

File name

SHA1 hash

SHA256 hash

mso2016-kb4493225-fullfile-x86-glb.exe

92A2FE0DD1E3EDC082F2B519AE8FAAD5D4FD786F

D6679A12DAFC1A6BE17B1C2513EF82272205972831EF5C160A7B8669E4665610

mso2016-kb4493225-fullfile-x64-glb.exe

F92068B12DF8F12941724EC553A655947DA820BB

24CBF2BB6EF9C7A157B33A5476297B60634F3783F1C1BDC4EDCA42E20B22BCF5

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 identifier

File name

File version

File size

Date

Time

firstrun.exe

firstrun.exe

16.0.5095.1000

771896

10-Feb-21

02:46

msointl.dll.x86.1025

msointl.dll

16.0.4927.1000

3287904

11-Feb-21

02:48

msointl.dll.x86.1026

msointl.dll

16.0.4927.1000

1886048

11-Feb-21

02:45

msointl.dll.x86.1027

msointl.dll

16.0.4927.1000

1817952

11-Feb-21

03:04

msointl.dll.x86.1029

msointl.dll

16.0.4927.1000

1928032

11-Feb-21

02:48

msointl.dll.x86.1030

msointl.dll

16.0.4927.1000

1758040

11-Feb-21

02:48

msointl.dll.x86.1031

msointl.dll

16.0.4927.1000

1948216

11-Feb-21

02:48

msointl.dll.x86.1032

msointl.dll

16.0.4927.1000

2057048

11-Feb-21

02:48

msointl.dll.x86.3082

msointl.dll

16.0.4927.1000

1826360

11-Feb-21

02:48

msointl.dll.x86.1061

msointl.dll

16.0.4927.1000

1731664

11-Feb-21

02:45

msointl.dll.x86.1069

msointl.dll

16.0.4927.1000

1740640

11-Feb-21

03:04

msointl.dll.x86.1035

msointl.dll

16.0.4927.1000

1738504

11-Feb-21

02:48

msointl.dll.x86.1036

msointl.dll

16.0.4927.1000

1975360

11-Feb-21

02:48

msointl.dll.x86.1110

msointl.dll

16.0.4927.1000

1774648

11-Feb-21

03:04

msointl.dll.x86.1095

msointl.dll

16.0.4927.1000

1830688

11-Feb-21

03:04

msointl.dll.x86.1037

msointl.dll

16.0.4927.1000

2907936

11-Feb-21

02:48

msointl.dll.x86.1081

msointl.dll

16.0.4927.1000

1952312

11-Feb-21

02:48

msointl.dll.x86.1050

msointl.dll

16.0.4927.1000

1742088

11-Feb-21

02:48

msointl.dll.x86.1038

msointl.dll

16.0.4927.1000

1951584

11-Feb-21

02:45

msointl.dll.x86.1057

msointl.dll

16.0.4927.1000

1621848

11-Feb-21

02:45

msointl.dll.x86.1040

msointl.dll

16.0.4927.1000

1766240

11-Feb-21

02:48

msointl.dll.x86.1041

msointl.dll

16.0.4927.1000

2012512

11-Feb-21

02:48

msointl.dll.x86.1087

msointl.dll

16.0.4927.1000

2103648

11-Feb-21

02:48

msointl.dll.x86.1099

msointl.dll

16.0.4927.1000

1940320

11-Feb-21

03:05

msointl.dll.x86.1042

msointl.dll

16.0.4927.1000

2768736

11-Feb-21

02:48

msointl.dll.x86.1063

msointl.dll

16.0.4927.1000

1845808

11-Feb-21

02:48

msointl.dll.x86.1062

msointl.dll

16.0.4927.1000

1832016

11-Feb-21

02:48

msointl.dll.x86.1086

msointl.dll

16.0.4927.1000

1649232

11-Feb-21

02:46

msointl.dll.x86.1044

msointl.dll

16.0.4927.1000

1721624

11-Feb-21

02:48

msointl.dll.x86.1043

msointl.dll

16.0.4927.1000

1771264

11-Feb-21

02:48

msointl.dll.x86.1045

msointl.dll

16.0.4927.1000

1917280

11-Feb-21

02:48

msointl.dll.x86.1046

msointl.dll

16.0.4927.1000

1829656

11-Feb-21

02:48

msointl.dll.x86.2070

msointl.dll

16.0.4927.1000

1836312

11-Feb-21

02:48

msointl.dll.x86.1048

msointl.dll

16.0.4927.1000

1963064

11-Feb-21

02:48

msointl.dll.x86.1049

msointl.dll

16.0.4927.1000

1904384

11-Feb-21

02:48

msointl.dll.x86.1051

msointl.dll

16.0.4927.1000

1971552

11-Feb-21

02:46

msointl.dll.x86.1060

msointl.dll

16.0.4927.1000

1807712

11-Feb-21

02:46

msointl.dll.x86.2074

msointl.dll

16.0.4927.1000

1765936

11-Feb-21

02:48

msointl.dll.x86.9242

msointl.dll

16.0.4927.1000

1794912

11-Feb-21

02:48

msointl.dll.x86.1053

msointl.dll

16.0.4927.1000

1734912

11-Feb-21

02:48

msointl.dll.x86.1054

msointl.dll

16.0.4927.1000

1827376

11-Feb-21

02:48

msointl.dll.x86.1055

msointl.dll

16.0.4927.1000

1998680

11-Feb-21

02:48

msointl.dll.x86.1058

msointl.dll

16.0.4927.1000

1891896

11-Feb-21

02:48

msointl.dll.x86.1066

msointl.dll

16.0.4927.1000

2005552

11-Feb-21

02:46

msointl.dll.x86.2052

msointl.dll

16.0.4927.1000

2321704

11-Feb-21

02:48

msointl.dll.x86.1028

msointl.dll

16.0.4927.1000

2329384

11-Feb-21

02:49

msores.dll

msores.dll

16.0.4795.1000

81683304

10-Feb-21

02:46

msores.dll.x86

msores.dll

16.0.4795.1000

81683304

10-Feb-21

03:00

mso.dll.x86

mso.dll

16.0.5134.1000

14416728

11-Feb-21

01:48

msointl.dll.x86.1033

msointl.dll

16.0.4927.1000

1539640

10-Feb-21

02:45

File identifier

File name

File version

File size

Date

Time

firstrun.exe

firstrun.exe

16.0.5095.1000

816952

10-Feb-21

02:58

msointl.dll.x64.1025

msointl.dll

16.0.5134.1000

3324752

11-Feb-21

02:20

msointl.dll.x64.1026

msointl.dll

16.0.5134.1000

1910128

11-Feb-21

01:56

msointl.dll.x64.1027

msointl.dll

16.0.5134.1000

1842032

11-Feb-21

02:13

msointl.dll.x64.1029

msointl.dll

16.0.5134.1000

1952088

11-Feb-21

02:20

msointl.dll.x64.1030

msointl.dll

16.0.5134.1000

1782104

11-Feb-21

02:20

msointl.dll.x64.1031

msointl.dll

16.0.5134.1000

1972560

11-Feb-21

02:20

msointl.dll.x64.1032

msointl.dll

16.0.5134.1000

2081624

11-Feb-21

02:20

msointl.dll.x64.3082

msointl.dll

16.0.5134.1000

1850760

11-Feb-21

02:20

msointl.dll.x64.1061

msointl.dll

16.0.5134.1000

1755472

11-Feb-21

01:56

msointl.dll.x64.1069

msointl.dll

16.0.5134.1000

1764696

11-Feb-21

02:14

msointl.dll.x64.1035

msointl.dll

16.0.5134.1000

1762648

11-Feb-21

02:20

msointl.dll.x64.1036

msointl.dll

16.0.5134.1000

1999208

11-Feb-21

02:20

msointl.dll.x64.1110

msointl.dll

16.0.5134.1000

1799024

11-Feb-21

02:14

msointl.dll.x64.1095

msointl.dll

16.0.5134.1000

1854856

11-Feb-21

02:14

msointl.dll.x64.1037

msointl.dll

16.0.5134.1000

2944824

11-Feb-21

02:20

msointl.dll.x64.1081

msointl.dll

16.0.5134.1000

1976712

11-Feb-21

02:20

msointl.dll.x64.1050

msointl.dll

16.0.5134.1000

1766280

11-Feb-21

02:20

msointl.dll.x64.1038

msointl.dll

16.0.5134.1000

1975640

11-Feb-21

01:57

msointl.dll.x64.1057

msointl.dll

16.0.5134.1000

1645960

11-Feb-21

01:57

msointl.dll.x64.1040

msointl.dll

16.0.5134.1000

1790832

11-Feb-21

02:20

msointl.dll.x64.1041

msointl.dll

16.0.5134.1000

2036592

11-Feb-21

02:20

msointl.dll.x64.1087

msointl.dll

16.0.5134.1000

2128264

11-Feb-21

02:20

msointl.dll.x64.1099

msointl.dll

16.0.5134.1000

1964368

11-Feb-21

02:14

msointl.dll.x64.1042

msointl.dll

16.0.5134.1000

2793328

11-Feb-21

02:20

msointl.dll.x64.1063

msointl.dll

16.0.5134.1000

1869680

11-Feb-21

02:20

msointl.dll.x64.1062

msointl.dll

16.0.5134.1000

1855832

11-Feb-21

02:20

msointl.dll.x64.1086

msointl.dll

16.0.5134.1000

1673584

11-Feb-21

01:57

msointl.dll.x64.1044

msointl.dll

16.0.5134.1000

1745232

11-Feb-21

02:20

msointl.dll.x64.1043

msointl.dll

16.0.5134.1000

1795440

11-Feb-21

02:20

msointl.dll.x64.1045

msointl.dll

16.0.5134.1000

1941336

11-Feb-21

02:20

msointl.dll.x64.1046

msointl.dll

16.0.5134.1000

1853832

11-Feb-21

02:20

msointl.dll.x64.2070

msointl.dll

16.0.5134.1000

1860464

11-Feb-21

02:20

msointl.dll.x64.1048

msointl.dll

16.0.5134.1000

1986952

11-Feb-21

02:20

msointl.dll.x64.1049

msointl.dll

16.0.5134.1000

1928072

11-Feb-21

02:20

msointl.dll.x64.1051

msointl.dll

16.0.5134.1000

1996112

11-Feb-21

01:57

msointl.dll.x64.1060

msointl.dll

16.0.5134.1000

1832280

11-Feb-21

01:57

msointl.dll.x64.2074

msointl.dll

16.0.5134.1000

1790296

11-Feb-21

02:20

msointl.dll.x64.9242

msointl.dll

16.0.5134.1000

1818960

11-Feb-21

02:20

msointl.dll.x64.1053

msointl.dll

16.0.5134.1000

1759056

11-Feb-21

02:20

msointl.dll.x64.1054

msointl.dll

16.0.5134.1000

1851224

11-Feb-21

02:20

msointl.dll.x64.1055

msointl.dll

16.0.5134.1000

2023248

11-Feb-21

02:20

msointl.dll.x64.1058

msointl.dll

16.0.5134.1000

1915736

11-Feb-21

02:20

msointl.dll.x64.1066

msointl.dll

16.0.5134.1000

2029912

11-Feb-21

01:57

msointl.dll.x64.2052

msointl.dll

16.0.5134.1000

2346264

11-Feb-21

02:20

msointl.dll.x64.1028

msointl.dll

16.0.5134.1000

2353952

11-Feb-21

02:20

msointl.dll.x86.1025

msointl.dll

16.0.4927.1000

3287904

11-Feb-21

02:48

msointl.dll.x86.1026

msointl.dll

16.0.4927.1000

1886048

11-Feb-21

02:45

msointl.dll.x86.1029

msointl.dll

16.0.4927.1000

1928032

11-Feb-21

02:48

msointl.dll.x86.1030

msointl.dll

16.0.4927.1000

1758040

11-Feb-21

02:48

msointl.dll.x86.1031

msointl.dll

16.0.4927.1000

1948216

11-Feb-21

02:48

msointl.dll.x86.1032

msointl.dll

16.0.4927.1000

2057048

11-Feb-21

02:48

msointl.dll.x86.3082

msointl.dll

16.0.4927.1000

1826360

11-Feb-21

02:48

msointl.dll.x86.1061

msointl.dll

16.0.4927.1000

1731664

11-Feb-21

02:45

msointl.dll.x86.1035

msointl.dll

16.0.4927.1000

1738504

11-Feb-21

02:48

msointl.dll.x86.1036

msointl.dll

16.0.4927.1000

1975360

11-Feb-21

02:48

msointl.dll.x86.1037

msointl.dll

16.0.4927.1000

2907936

11-Feb-21

02:48

msointl.dll.x86.1081

msointl.dll

16.0.4927.1000

1952312

11-Feb-21

02:48

msointl.dll.x86.1050

msointl.dll

16.0.4927.1000

1742088

11-Feb-21

02:48

msointl.dll.x86.1038

msointl.dll

16.0.4927.1000

1951584

11-Feb-21

02:45

msointl.dll.x86.1057

msointl.dll

16.0.4927.1000

1621848

11-Feb-21

02:45

msointl.dll.x86.1040

msointl.dll

16.0.4927.1000

1766240

11-Feb-21

02:48

msointl.dll.x86.1041

msointl.dll

16.0.4927.1000

2012512

11-Feb-21

02:48

msointl.dll.x86.1087

msointl.dll

16.0.4927.1000

2103648

11-Feb-21

02:48

msointl.dll.x86.1042

msointl.dll

16.0.4927.1000

2768736

11-Feb-21

02:48

msointl.dll.x86.1063

msointl.dll

16.0.4927.1000

1845808

11-Feb-21

02:48

msointl.dll.x86.1062

msointl.dll

16.0.4927.1000

1832016

11-Feb-21

02:48

msointl.dll.x86.1086

msointl.dll

16.0.4927.1000

1649232

11-Feb-21

02:46

msointl.dll.x86.1044

msointl.dll

16.0.4927.1000

1721624

11-Feb-21

02:48

msointl.dll.x86.1043

msointl.dll

16.0.4927.1000

1771264

11-Feb-21

02:48

msointl.dll.x86.1045

msointl.dll

16.0.4927.1000

1917280

11-Feb-21

02:48

msointl.dll.x86.1046

msointl.dll

16.0.4927.1000

1829656

11-Feb-21

02:48

msointl.dll.x86.2070

msointl.dll

16.0.4927.1000

1836312

11-Feb-21

02:48

msointl.dll.x86.1048

msointl.dll

16.0.4927.1000

1963064

11-Feb-21

02:48

msointl.dll.x86.1049

msointl.dll

16.0.4927.1000

1904384

11-Feb-21

02:48

msointl.dll.x86.1051

msointl.dll

16.0.4927.1000

1971552

11-Feb-21

02:46

msointl.dll.x86.1060

msointl.dll

16.0.4927.1000

1807712

11-Feb-21

02:46

msointl.dll.x86.2074

msointl.dll

16.0.4927.1000

1765936

11-Feb-21

02:48

msointl.dll.x86.9242

msointl.dll

16.0.4927.1000

1794912

11-Feb-21

02:48

msointl.dll.x86.1053

msointl.dll

16.0.4927.1000

1734912

11-Feb-21

02:48

msointl.dll.x86.1054

msointl.dll

16.0.4927.1000

1827376

11-Feb-21

02:48

msointl.dll.x86.1055

msointl.dll

16.0.4927.1000

1998680

11-Feb-21

02:48

msointl.dll.x86.1058

msointl.dll

16.0.4927.1000

1891896

11-Feb-21

02:48

msointl.dll.x86.1066

msointl.dll

16.0.4927.1000

2005552

11-Feb-21

02:46

msointl.dll.x86.2052

msointl.dll

16.0.4927.1000

2321704

11-Feb-21

02:48

msointl.dll.x86.1028

msointl.dll

16.0.4927.1000

2329384

11-Feb-21

02:49

conversion.office.msores.dll

msores.dll

16.0.4795.1000

81683088

10-Feb-21

02:53

msores.dll

msores.dll

16.0.4795.1000

81683088

10-Feb-21

02:46

ppt.conversion.msores.dll

msores.dll

16.0.4795.1000

81683088

ppt.edit.msores.dll

msores.dll

16.0.4795.1000

81683088

wac.office.msores.dll

msores.dll

16.0.4795.1000

81683088

msores.dll

msores.dll

16.0.4795.1000

81683304

10-Feb-21

02:46

msores.dll.x86

msores.dll

16.0.4795.1000

81683304

10-Feb-21

03:00

mso.dll.x64

mso.dll

16.0.5134.1000

19871112

11-Feb-21

01:51

mso.dll.x86

mso.dll

16.0.5134.1000

14416728

11-Feb-21

01:48

msointl.dll.x64.1033

msointl.dll

16.0.4927.1000

1564424

10-Feb-21

02:53

msointl.dll.x86.1033

msointl.dll

16.0.4927.1000

1539640

10-Feb-21

02:45

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