Summary
This security update resolves a Microsoft Excel Remote Code Execution Vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-28449.
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?).
Known issue in this update
After you install this update, some automation add-ins for Excel might not load. This might generate a "Cannot run the macro" error message. To fix this issue, install KB 5001920.
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: April 13, 2021.
Security update replacement information
This security update replaces previously released security update 4493225.
File hash information
|
File name |
SHA256 hash |
|
|---|---|---|
|
mso2016-kb4504722-fullfile-x86-glb.exe |
78917C813597BB5035E95D1EAD485294B983DDD44C04B53585D3908778425AD8 |
|
|
mso2016-kb4504722-fullfile-x64-glb.exe |
C5DC73A15E8D42AB61D597586CB536FC3AD8CF30977D937B960D66382F345872 |
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 |
16.0.5149.1000 |
774440 |
23-Mar-21 |
11:59 |
|
msointl.dll.x86.1025 |
msointl.dll |
16.0.4927.1000 |
3287904 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1026 |
msointl.dll |
16.0.4927.1000 |
1886048 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1027 |
msointl.dll |
16.0.4927.1000 |
1817952 |
23-Mar-21 |
07:34 |
|
msointl.dll.x86.1029 |
msointl.dll |
16.0.4927.1000 |
1928032 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1030 |
msointl.dll |
16.0.4927.1000 |
1758040 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1031 |
msointl.dll |
16.0.4927.1000 |
1948216 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1032 |
msointl.dll |
16.0.4927.1000 |
2057048 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.3082 |
msointl.dll |
16.0.4927.1000 |
1826360 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1061 |
msointl.dll |
16.0.4927.1000 |
1731664 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1069 |
msointl.dll |
16.0.4927.1000 |
1740640 |
23-Mar-21 |
07:34 |
|
msointl.dll.x86.1035 |
msointl.dll |
16.0.4927.1000 |
1738504 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1036 |
msointl.dll |
16.0.4927.1000 |
1975360 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1110 |
msointl.dll |
16.0.4927.1000 |
1774648 |
23-Mar-21 |
07:34 |
|
msointl.dll.x86.1095 |
msointl.dll |
16.0.4927.1000 |
1830688 |
23-Mar-21 |
07:34 |
|
msointl.dll.x86.1037 |
msointl.dll |
16.0.4927.1000 |
2907936 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1081 |
msointl.dll |
16.0.4927.1000 |
1952312 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1050 |
msointl.dll |
16.0.4927.1000 |
1742088 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1038 |
msointl.dll |
16.0.4927.1000 |
1951584 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1057 |
msointl.dll |
16.0.4927.1000 |
1621848 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1040 |
msointl.dll |
16.0.4927.1000 |
1766240 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1041 |
msointl.dll |
16.0.4927.1000 |
2012512 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1087 |
msointl.dll |
16.0.4927.1000 |
2103648 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1099 |
msointl.dll |
16.0.4927.1000 |
1940320 |
23-Mar-21 |
07:35 |
|
msointl.dll.x86.1042 |
msointl.dll |
16.0.4927.1000 |
2768736 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1063 |
msointl.dll |
16.0.4927.1000 |
1845808 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1062 |
msointl.dll |
16.0.4927.1000 |
1832016 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1086 |
msointl.dll |
16.0.4927.1000 |
1649232 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1044 |
msointl.dll |
16.0.4927.1000 |
1721624 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1043 |
msointl.dll |
16.0.4927.1000 |
1771264 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1045 |
msointl.dll |
16.0.4927.1000 |
1917280 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1046 |
msointl.dll |
16.0.4927.1000 |
1829656 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.2070 |
msointl.dll |
16.0.4927.1000 |
1836312 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1048 |
msointl.dll |
16.0.4927.1000 |
1963064 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1049 |
msointl.dll |
16.0.4927.1000 |
1904384 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1051 |
msointl.dll |
16.0.4927.1000 |
1971552 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1060 |
msointl.dll |
16.0.4927.1000 |
1807712 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.2074 |
msointl.dll |
16.0.4927.1000 |
1765936 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.9242 |
msointl.dll |
16.0.4927.1000 |
1794912 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1053 |
msointl.dll |
16.0.4927.1000 |
1734912 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1054 |
msointl.dll |
16.0.4927.1000 |
1827376 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1055 |
msointl.dll |
16.0.4927.1000 |
1998680 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1058 |
msointl.dll |
16.0.4927.1000 |
1891896 |
23-Mar-21 |
07:16 |
|
msointl.dll.x86.1066 |
msointl.dll |
16.0.4927.1000 |
2005552 |
23-Mar-21 |
07:16 |
|
msointl.dll.x86.2052 |
msointl.dll |
16.0.4927.1000 |
2321704 |
23-Mar-21 |
07:16 |
|
msointl.dll.x86.1028 |
msointl.dll |
16.0.4927.1000 |
2329384 |
23-Mar-21 |
07:16 |
|
msores.dll |
msores.dll |
16.0.4795.1000 |
81683304 |
16-Mar-21 |
06:34 |
|
msores.dll.x86 |
msores.dll |
16.0.4795.1000 |
81683304 |
16-Mar-21 |
06:39 |
|
mso.dll.x86 |
mso.dll |
16.0.5149.1000 |
14182256 |
23-Mar-21 |
11:59 |
|
msointl.dll.x86.1033 |
msointl.dll |
16.0.4927.1000 |
1539640 |
16-Mar-21 |
06:33 |
|
File identifier |
File name |
File version |
File size |
Date |
Time |
|---|---|---|---|---|---|
|
firstrun.exe |
firstrun.exe |
16.0.5149.1000 |
816928 |
23-Mar-21 |
11:58 |
|
msointl.dll.x64.1025 |
msointl.dll |
16.0.5149.1000 |
3324768 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1026 |
msointl.dll |
16.0.5149.1000 |
1910112 |
24-Mar-21 |
12:04 |
|
msointl.dll.x64.1027 |
msointl.dll |
16.0.5149.1000 |
1842064 |
24-Mar-21 |
12:21 |
|
msointl.dll.x64.1029 |
msointl.dll |
16.0.5149.1000 |
1952112 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1030 |
msointl.dll |
16.0.5149.1000 |
1782112 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1031 |
msointl.dll |
16.0.5149.1000 |
1972608 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1032 |
msointl.dll |
16.0.5149.1000 |
2081672 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.3082 |
msointl.dll |
16.0.5149.1000 |
1850736 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1061 |
msointl.dll |
16.0.5149.1000 |
1755480 |
24-Mar-21 |
12:04 |
|
msointl.dll.x64.1069 |
msointl.dll |
16.0.5149.1000 |
1764704 |
24-Mar-21 |
12:21 |
|
msointl.dll.x64.1035 |
msointl.dll |
16.0.5149.1000 |
1762688 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1036 |
msointl.dll |
16.0.5149.1000 |
1999256 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1110 |
msointl.dll |
16.0.5149.1000 |
1799008 |
24-Mar-21 |
12:22 |
|
msointl.dll.x64.1095 |
msointl.dll |
16.0.5149.1000 |
1854816 |
24-Mar-21 |
12:22 |
|
msointl.dll.x64.1037 |
msointl.dll |
16.0.5149.1000 |
2944840 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1081 |
msointl.dll |
16.0.5149.1000 |
1976664 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1050 |
msointl.dll |
16.0.5149.1000 |
1766232 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1038 |
msointl.dll |
16.0.5149.1000 |
1975664 |
24-Mar-21 |
12:04 |
|
msointl.dll.x64.1057 |
msointl.dll |
16.0.5149.1000 |
1645968 |
24-Mar-21 |
12:04 |
|
msointl.dll.x64.1040 |
msointl.dll |
16.0.5149.1000 |
1790864 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1041 |
msointl.dll |
16.0.5149.1000 |
2036568 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1087 |
msointl.dll |
16.0.5149.1000 |
2128216 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1099 |
msointl.dll |
16.0.5149.1000 |
1964416 |
24-Mar-21 |
12:22 |
|
msointl.dll.x64.1042 |
msointl.dll |
16.0.5149.1000 |
2793336 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1063 |
msointl.dll |
16.0.5149.1000 |
1869712 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1062 |
msointl.dll |
16.0.5149.1000 |
1855872 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1086 |
msointl.dll |
16.0.5149.1000 |
1673600 |
24-Mar-21 |
12:04 |
|
msointl.dll.x64.1044 |
msointl.dll |
16.0.5149.1000 |
1745256 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1043 |
msointl.dll |
16.0.5149.1000 |
1795416 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1045 |
msointl.dll |
16.0.5149.1000 |
1941344 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1046 |
msointl.dll |
16.0.5149.1000 |
1853792 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.2070 |
msointl.dll |
16.0.5149.1000 |
1860440 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1048 |
msointl.dll |
16.0.5149.1000 |
1986904 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1049 |
msointl.dll |
16.0.5149.1000 |
1928024 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1051 |
msointl.dll |
16.0.5149.1000 |
1996128 |
24-Mar-21 |
12:04 |
|
msointl.dll.x64.1060 |
msointl.dll |
16.0.5149.1000 |
1832280 |
24-Mar-21 |
12:04 |
|
msointl.dll.x64.2074 |
msointl.dll |
16.0.5149.1000 |
1790296 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.9242 |
msointl.dll |
16.0.5149.1000 |
1818968 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1053 |
msointl.dll |
16.0.5149.1000 |
1759072 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1054 |
msointl.dll |
16.0.5149.1000 |
1851224 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1055 |
msointl.dll |
16.0.5149.1000 |
2023264 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1058 |
msointl.dll |
16.0.5149.1000 |
1915736 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1066 |
msointl.dll |
16.0.5149.1000 |
2029920 |
24-Mar-21 |
12:04 |
|
msointl.dll.x64.2052 |
msointl.dll |
16.0.5149.1000 |
2346272 |
24-Mar-21 |
12:28 |
|
msointl.dll.x64.1028 |
msointl.dll |
16.0.5149.1000 |
2353960 |
24-Mar-21 |
12:28 |
|
msointl.dll.x86.1025 |
msointl.dll |
16.0.4927.1000 |
3287904 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1026 |
msointl.dll |
16.0.4927.1000 |
1886048 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1029 |
msointl.dll |
16.0.4927.1000 |
1928032 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1030 |
msointl.dll |
16.0.4927.1000 |
1758040 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1031 |
msointl.dll |
16.0.4927.1000 |
1948216 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1032 |
msointl.dll |
16.0.4927.1000 |
2057048 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.3082 |
msointl.dll |
16.0.4927.1000 |
1826360 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1061 |
msointl.dll |
16.0.4927.1000 |
1731664 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1035 |
msointl.dll |
16.0.4927.1000 |
1738504 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1036 |
msointl.dll |
16.0.4927.1000 |
1975360 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1037 |
msointl.dll |
16.0.4927.1000 |
2907936 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1081 |
msointl.dll |
16.0.4927.1000 |
1952312 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1050 |
msointl.dll |
16.0.4927.1000 |
1742088 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1038 |
msointl.dll |
16.0.4927.1000 |
1951584 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1057 |
msointl.dll |
16.0.4927.1000 |
1621848 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1040 |
msointl.dll |
16.0.4927.1000 |
1766240 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1041 |
msointl.dll |
16.0.4927.1000 |
2012512 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1087 |
msointl.dll |
16.0.4927.1000 |
2103648 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1042 |
msointl.dll |
16.0.4927.1000 |
2768736 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1063 |
msointl.dll |
16.0.4927.1000 |
1845808 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1062 |
msointl.dll |
16.0.4927.1000 |
1832016 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1086 |
msointl.dll |
16.0.4927.1000 |
1649232 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1044 |
msointl.dll |
16.0.4927.1000 |
1721624 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1043 |
msointl.dll |
16.0.4927.1000 |
1771264 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1045 |
msointl.dll |
16.0.4927.1000 |
1917280 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1046 |
msointl.dll |
16.0.4927.1000 |
1829656 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.2070 |
msointl.dll |
16.0.4927.1000 |
1836312 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1048 |
msointl.dll |
16.0.4927.1000 |
1963064 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1049 |
msointl.dll |
16.0.4927.1000 |
1904384 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1051 |
msointl.dll |
16.0.4927.1000 |
1971552 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1060 |
msointl.dll |
16.0.4927.1000 |
1807712 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.2074 |
msointl.dll |
16.0.4927.1000 |
1765936 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.9242 |
msointl.dll |
16.0.4927.1000 |
1794912 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1053 |
msointl.dll |
16.0.4927.1000 |
1734912 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1054 |
msointl.dll |
16.0.4927.1000 |
1827376 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1055 |
msointl.dll |
16.0.4927.1000 |
1998680 |
23-Mar-21 |
07:15 |
|
msointl.dll.x86.1058 |
msointl.dll |
16.0.4927.1000 |
1891896 |
23-Mar-21 |
07:16 |
|
msointl.dll.x86.1066 |
msointl.dll |
16.0.4927.1000 |
2005552 |
23-Mar-21 |
07:16 |
|
msointl.dll.x86.2052 |
msointl.dll |
16.0.4927.1000 |
2321704 |
23-Mar-21 |
07:16 |
|
msointl.dll.x86.1028 |
msointl.dll |
16.0.4927.1000 |
2329384 |
23-Mar-21 |
07:16 |
|
conversion.office.msores.dll |
msores.dll |
16.0.4795.1000 |
81683088 |
16-Mar-21 |
06:32 |
|
msores.dll |
msores.dll |
16.0.4795.1000 |
81683088 |
16-Mar-21 |
06:32 |
|
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 |
16-Mar-21 |
06:32 |
|
msores.dll.x86 |
msores.dll |
16.0.4795.1000 |
81683304 |
16-Mar-21 |
06:39 |
|
mso.dll.x64 |
mso.dll |
16.0.5149.1000 |
19876200 |
23-Mar-21 |
11:58 |
|
mso.dll.x86 |
mso.dll |
16.0.5149.1000 |
14182256 |
23-Mar-21 |
11:59 |
|
msointl.dll.x64.1033 |
msointl.dll |
16.0.4927.1000 |
1564424 |
16-Mar-21 |
06:33 |
|
msointl.dll.x86.1033 |
msointl.dll |
16.0.4927.1000 |
1539640 |
16-Mar-21 |
06:33 |
Information about protection and security
Protect yourself online: Windows Security support
Learn how we guard against cyber threats: Microsoft Security
Change history
The following table summarizes some of the most important changes to this topic.
|
Date |
Description |
|---|---|
|
April 23, 2021 |
Added a "Known issue in this update" section to describe an issue that users may experience after installing this update. |
|
May 11, 2021 |
Updated the "Known issue in this update" section to provide a resolution to the issue. |
