Outlook and Outlook for Mac: Update File Versions
This Wiki page lists the currently supported MSI-based Outlook related file versions and updates with release dates and KB articles.
Click an Outlook version to jump to that section as follows:
Outlook 2016
Release Date | File | File Version | KB Article |
9/22/2015 |
Outlook.exe | 16.0.4229.1024 or 16.0.4266.1001 |
General Availability |
10/13/2015 | Outlook.exe | 16.0.4288.1000 | 2910976 |
10/13/2015 | MSO.dll | 16.0.4288.1000 | 2910972 |
10/13/2015 | wwlib.dll | 16.0.4288.1000 | 2920691 |
11/10/2015 | Outlook.exe | 16.0.4300.1000 | 3101517 |
11/10/2015 | MSO.dll | 16.0.4300.1000 | 3085540 3101515 |
11/10/2015 | wwlib.dll | 16.0.4300.1001 | 3101513 |
12/8/2015 | Outlook.exe | 16.0.4312.1000 | 3114387 |
12/8/2015 | MSO.dll | 16.0.4312.1000 | 3114383 |
12/8/2015 | wwlib.dll | 16.0.4312.1001 | 3114382 |
1/12/2016 | Outlook.exe | 16.0.4324.1000 | 3114532 |
1/12/2016 | MSO.dll | 16.0.4324.1000 | 3114527 |
1/12/2016 | wwlib.dll | 16.0.4324.1000 | 3114526 |
2/9/2016 | Outlook.exe | 16.0.4339.1000 | 3114707 |
2/9/2016 | MSO.dll | 16.0.4339.1000 | 3114703 |
2/9/2016 | wwlib.dll | 16.0.4339.1000 | 3114702 |
3/8/2016 | Outlook.exe | 16.0.4351.1000 | 3114861 |
3/8/2016 | MSO.dll | 16.0.4351.1000 | 3114857 |
3/8/2016 | wwlib.dll | 16.0.4351.1001 | 3114855 |
4/5/2016 | Outlook.exe | 16.0.4366.1000 | 3114972 |
4/5/2016 | MSO.dll | 16.0.4366.1000 | 3114970 |
4/5/2016 | wwlib.dll | 16.0.4366.1000 | 3114969 |
5/3/2016 | Outlook.exe | 16.0.4378.1000 | 3115101 |
5/3/2016 | MSO.dll | 16.0.4372.1000 | 3115096 |
5/10/2016 | wwlib.dll | 16.0.4378.1001 | 3115094 |
6/7/2016 | Outlook.exe | 16.0.4393.1000 | 3115147 |
6/14/2016 | MSO.dll | 16.0.4390.1000 | 3115144 |
6/14/2016 | wwlib.dll | 16.0.4393.1000 | 3115182 |
7/12/2016 | Outlook.exe | 16.0.4405.1000 | 3115279 |
7/5/2016 | MSO.dll | 16.0.4405.1001 | 3115302 |
7/12/2016 | wwlib.dll | 16.0.4405.1000 | 3115301 |
8/9/2016 | Outlook.exe | 16.0.4417.1000 | 3115440 |
8/9/2016 | MSO.dll | 16.0.4417.1000 | 3115415 |
8/9/2016 | wwlib.dll | 16.0.4417.1000 | 3115439 |
9/13/2016 | Outlook.exe | 16.0.4432.1001 | 3118293 |
9/13/2016 | MSO.dll | 16.0.4432.1000 | 3118292 |
9/7/2016 | wwlib.dll | 16.0.4432.1001 | 3118291 |
10/4/2016 | Outlook.exe | 16.0.4444.1000 | 3118375 |
10/4/2016 | MSO.dll | 16.0.4444.1002 | 3118374 |
10/11/2016 | wwlib.dll | 16.0.4444.1003 | 3118331 |
11/1/2016 | Outlook.exe | 16.0.4456.1003 | 3127912 |
11/1/2016 | MSO.dll | 16.0.4456.1003 | 3127909 |
11/1/2016 | wwlib.dll | 16.0.4456.1003 | 3127941 |
12/6/2016 | Outlook.exe | 16.0.4471.1000 | 3127988 |
12/13/2016 | MSO.dll | 16.0.4471.1000 | 3127986 |
12/6/2016 | wwlib.dll | 16.0.4471.1000 | 3127984 |
1/3/2017 | Outlook.exe | 16.0.4483.1000 | 3141453 |
1/3/2017 | MSO.dll | 16.0.4483.1000 | 3141473 |
1/10/2017 | wwlib.dll | 16.0.4483.1000 | 3128057 |
2/7/2017 | Outlook.exe | 16.0.4498.1000 | 3141511 |
3/14/2017 | Outlook.exe | 16.0.4510.1002 | 3085429 |
3/7/2017 | MSO.dll | 16.0.4507.1000 | 3178661 |
3/14/2017 | wwlib.dll | 16.0.4510.1000 | 3178674 |
4/11/2017 | Outlook.exe | 16.0.4522.1001 | 3178664 |
4/11/2017 | MSO.dll | 16.0.4522.1002 | 3178702 |
4/4/2017 | wwlib.dll | 16.0.4522.1001 | 3178720 |
5/2/2017 | Outlook.exe | 16.0.4534.1001 | 3191883 |
5/9/2017 | MSO.dll | 16.0.4534.1000 | 3191881 |
5/9/2017 | wwlib.dll | 16.0.4534.1000 | 3191865 |
6/13/2017 | Outlook.exe | 16.0.4549.1002 | 3191932 |
6/13/2017 | MSO.dll | 16.0.4549.1001 | 3191944 |
6/13/2017 | wwlib.dll | 16.0.4549.1000 | 3191945 |
7/5/2017 | MSO.dll | 16.0.4561.1000 | 3213549 |
7/5/2017 | wwlib.dll | 16.0.4561.1000 | 3213550 |
7/27/2017 | Outlook.exe | 16.0.4573.1001 | 4011052 |
8/1/2017 | MSO.dll | 16.0.4573.1000 | 4011037 |
8/8/2017 | wwlib.dll | 16.0.4573.1002 | 3213656 |
9/12/2017 | Outlook.exe | 16.0.4588.1000 | 4011091 |
9/5/2017 | MSO.dll | 16.0.4588.1000 | 4011102 |
9/5/2017 | wwlib.dll | 16.0.4588.1000 | 4011039 |
10/10/2017 | Outlook.exe | 16.0.4600.1000 | 4011162 |
10/3/2017 | wwlib.dll | 16.0.4600.1000 | 4011140 |
11/7/2017 | Outlook.exe | 16.0.4615.1000 | 4011240 |
11/7/2017 | MSO.dll | 16.0.4615.1000 | 4011138 |
11/14/2017 | wwlib.dll | 16.0.4615.1000 | 4011242 |
12/5/2017 | Outlook.exe | 16.0.4627.1000 | 4011570 |
12/5/2017 | MSO.dll | 16.0.4618.1000 | 4011567 |
12/12/2017 | wwlib.dll | 16.0.4627.1000 | 4011575 |
1/9/2018 | Outlook.exe | 16.0.4639.1000 | 4011626 |
1/9/2018 | MSO.dll | 16.0.4639.1000 | 4011632 |
1/9/2018 | wwlib.dll | 16.0.4639.1000 | 4011643 |
1/22/2018 | Outlook.exe | 16.0.4639.1003 | 4011123 |
2/13/2018 | Outlook.exe | 16.0.4654.1000 | 4011682 |
2/13/2018 | MSO.dll | 16.0.4654.1000 | 4011686 |
2/6/2018 | wwlib.dll | 16.0.4654.1000 | 4011681 |
3/6/2018 | Outlook.exe | 16.0.4666.1000 | 4018296 |
3/6/2018 | MSO.dll | 16.0.4666.1000 | 4018295 |
3/13/2018 | wwlib.dll | 16.0.4666.1000 | 4011730 |
4/3/2018 | Outlook.exe | 16.0.4678.1000 | 4018326 |
4/10/2018 | MSO.dll | 16.0.4678.1000 | 4018328 |
4/10/2018 | wwlib.dll | 16.0.4678.1001 | 4018339 |
5/1/2018 | Outlook.exe | 16.0.4690.1000 | 4018372 |
5/8/2018 | wwlib.dll | 16.0.4690.1000 | 4018383 |
6/12/2018 | Outlook.exe | 16.0.4705.1000 | 4022160 |
6/5/2018 | MSO.dll | 16.0.4705.1000 | 4022159 |
6/5/2018 | wwlib.dll | 16.0.4705.1000 | 4022175 |
7/3/2018 | Outlook.exe | 16.0.4717.1000 | 4022230 |
7/3/2018 | MSO.dll | 16.0.4717.1000 | 4022214 |
7/10/2018 | wwlib.dll | 16.0.4717.1000 | 4022218 |
8/14/2018 | Outlook.exe | 16.0.4732.1000 | 4032235 |
8/14/2018 | MSO.dll | 16.0.4732.1000 | 4032233 |
8/7/2018 | wwlib.dll | 16.0.4732.1000 | 4032258 |
9/4/2018 | Outlook.exe | 16.0.4735.1000 | 4092462 |
9/4/2018 | MSO.dll | 16.0.4738.1000 | 4092461 |
9/11/2018 | wwlib.dll | 16.0.4744.1000 | 4092447 |
10/9/2018 | Outlook.exe | 16.0.4756.1001 | 4461440 |
10/9/2018 | MSO.dll | 16.0.4756.1000 | 4461437 |
10/9/2018 | wwlib.dll | 16.0.4756.1000 | 4461449 |
11/13/2018 | Outlook.exe | 16.0.4771.1000 | 4461506 |
11/6/2018 | MSO.dll | 16.0.4768.1000 | 4461505 |
11/13/2018 | wwlib.dll | 16.0.4771.1000 | 4461504 |
12/11/2018 | Outlook.exe | 16.0.4783.1000 | 4461544 |
1/8/2019 | Outlook.exe | 16.0.4795.1000 | 4461601 |
1/8/2019 | MSO.dll | 16.0.4795.1000 | 4461535 |
1/8/2019 | wwlib.dll | 16.0.4795.1001 | 4461543 |
2/5/2019 | Outlook.exe | 16.0.4810.1000 | 4462147 |
2/12/2019 | MSO.dll | 16.0.4810.1000 | 4462146 |
2/5/2019 | wwlib.dll | 16.0.4810.1000 | 4462145 |
3/5/2019 | Outlook.exe | 16.0.4822.1000 | 4462196 |
3/5/2019 | MSO.dll | 16.0.4822.1000 | 4462214 |
3/5/2019 | wwlib.dll | 16.0.4822.1000 | 4462193 |
4/2/2019 | Outlook.exe | 16.0.4834.1000 | 4464502 |
4/9/2019 | MSO.dll | 16.0.4834.1000 | 4462242 |
4/2/2019 | wwlib.dll | 16.0.4834.1000 | 4462240 |
5/7/2019 | Outlook.exe | 16.0.4849.1000 | 4464540 |
5/7/2019 | MSO.dll | 16.0.4849.1000 | 4464552 |
5/14/2019 | wwlib.dll | 16.0.4849.1000 | 4464536 |
6/4/2019 | Outlook.exe | 16.0.4861.1000 | 4464585 |
6/11/2019 | wwlib.dll | 16.0.4861.1000 | 4464596 |
7/9/2019 | Outlook.exe | 16.0.4873.1000 | 4475517 |
7/2/2019 | MSO.dll | 16.0.4873.1000 | 4464582 |
7/2/2019 | wwlib.dll | 16.0.4873.1000 | 4475521 |
8/13/2019 | Outlook.exe | 16.0.4888.1000 | 4475553 |
8/6/2019 | MSO.dll | 16.0.4888.1000 | 4475542 |
8/13/2019 | wwlib.dll | 16.0.4888.1000 | 4475540 |
9/3/2019 | Outlook.exe | 16.0.4900.1000 | 4475593 |
9/10/2019 | MSO.dll | 16.0.4900.1000 | 4475583 |
9/3/2019 | wwlib.dll | 16.0.4900.1000 | 4475592 |
10/1/2019 | Outlook.exe | 16.0.4900.1000 | 4484107 |
10/1/2019 | MSO.dll | 16.0.4912.1000 | 4484114 |
10/1/2019 | wwlib.dll | 16.0.4912.1000 | 4484105 |
11/5/2019 | Outlook.exe | 16.0.4927.1000 | 4484139 |
11/5/2019 | MSO.dll | 16.0.4927.1000 | 4484137 |
11/5/2019 | wwlib.dll | 16.0.4912.1000 | 4484135 |
11/25/2019 | Outlook.exe | 16.0.4939.1001 | 4484172 |
12/10/2019 | wwlib.dll | 16.0.4939.1000 | 4484169 |
1/7/2020 | Outlook.exe | 16.0.4954.1000 | 4484212 |
1/7/2020 | wwlib.dll | 16.0.4954.1000 | 4484219 |
2/11/2020 | Outlook.exe | 16.0.4966.1000 | 4484250 |
2/4/2020 | wwlib.dll | 16.0.4966.1000 | 4484249 |
3/10/2020 | Outlook.exe | 16.0.4978.1001 | 4462111 |
3/10/2020 | MSO.dll | 16.0.4978.1000 | 3213653 |
3/10/2020 | wwlib.dll | 16.0.4978.1000 | 4484268 |
4/14/2020 | Outlook.exe | 16.0.4993.1001 | 4484274 |
4/14/2020 | MSO.dll | 16.0.4993.1002 | 4484214 |
4/14/2020 | wwlib.dll | 16.0.4993.1001 | 4484300 |
5/5/2020 | Outlook.exe | 16.0.5005.1000 | 4484343 |
5/5/2020 | wwlib.dll | 16.0.5005.1000 | 4484341 |
6/2/2020 | Outlook.exe | 16.0.5017.1000 | 4484398 |
6/9/2020 | MSO.dll | 16.0.5017.1000 | 4484342 |
6/9/2020 | wwlib.dll | 16.0.5017.1000 | 4484369 |
7/14/2020 | Outlook.exe | 16.0.5017.1000 | 4484433 |
7/7/2020 | MSO.dll | 16.0.5032.1000 | 4484439 |
7/14/2020 | wwlib.dll | 16.0.5032.1000 | 4484438 |
8/11/2020 | Outlook.exe | 16.0.5044.1000 | 4484475 |
8/11/2020 | wwlib.dll | 16.0.5044.1000 | 4484474 |
9/1/2020 | Outlook.exe | 16.0.5056.1000 | 4484511 |
9/8/2020 | MSO.dll | 16.0.5056.1000 | 4484466 |
9/8/2020 | wwlib.dll | 16.0.5056.1000 | 4484510 |
10/13/2020 | Outlook.exe | 16.0.5071.1000 | 4486671 |
10/13/2020 | wwlib.dll | 16.0.5071.1000 | 4486679 |
11/3/2020 | Outlook.exe | 16.0.5071.1000 | 4486720 |
11/3/2020 | MSO.dll | 16.0.5080.1000 | 4486680 |
11/10/2020 | wwlib.dll | 16.0.5083.1000 | 4486719 |
12/8/2020 | Outlook.exe | 16.0.5095.1000 | 4486748 |
12/1/2020 | MSO.dll | 16.0.5095.1000 | 4486746 |
12/1/2020 | wwlib.dll | 16.0.5095.1000 | 4486756 |
1/5/2021 | Outlook.exe | 16.0.5110.1000 | 4493166 |
1/5/2021 | MSO.dll | 16.0.5107.1000 | 4493157 |
1/12/2021 | wwlib.dll | 16.0.5110.1000 | 4493156 |
2/2/2021 | Outlook.exe | 16.0.5113.1000 | 4493190 |
2/2/2021 | MSO.dll | 16.0.5122.1000 | 4493189 |
3/2/2021 | Outlook.exe | 16.0.5134.1000 | 4493226 |
3/9/2021 | MSO.dll | 16.0.5134.1000 | 4493225 |
4/13/2021 | Outlook.exe | 16.0.5149.1000 | 4504712 |
4/13/2021 | MSO.dll | 16.0.5149.1000 | 4504722 |
4/13/2021 | wwlib.dll | 16.0.5149.1000 | 4493198 |
5/11/2021 | Outlook.exe | 16.0.5161.1000 | 5001921 |
5/11/2021 | MSO.dll | 16.0.5161.1002 | 5001920 |
5/11/2021 | wwlib.dll | 16.0.5161.1000 | 5001919 |
6/8/2021 | Outlook.exe |
16.0.5173.1000 |
5001942 |
6/8/2021 | MSO.dll | 16.0.5173.1000 | 5001950 |
7/6/2021 | Outlook.exe | 16.0.5182.1000 | 5001980 |
7/13/2021 | MSO.dll | 16.0.5188.1000 | 5001979 |
7/13/2021 | wwlib.dll | 16.0.5188.1000 | 5001949 |
9/14/2021 | MSO.dll | 16.0.5215.1000 | 5002005 |
10/5/2021 | Outlook.exe | 16.0.5197.1000 | 5001998 |
10/12/2021 | wwlib.dll | 16.0.5227.1000 | 5002004 |
12/14/2021 | MSO.dll | 16.0.5254.1001 | 5002033 |
1/11/2022 | MSO.dll | 16.0.5266.1000 | 5002116 |
1/11/2022 | wwlib.dll | 16.0.5266.1000 | 5002057 |
2/8/2022 | MSO.dll | 16.0.5278.1000 | 5002140 |
3/8/2022 | wwlib.dll | 16.0.5290.1000 | 5002139 |
5/10/2022 | wwlib.dll | 16.0.5317.1000 | 5002184 |
8/9/2022 | Outlook.exe | 16.0.5257.1000 | 5002051 |
9/13/2022 | MSO.dll | 16.0.5361.1000 | 5002178 |
10/11/2022 | MSO.dll | 16.0.5365.1000 | 5002288 |
11/1/2022 | MSO.dll | 16.0.5366.1000 | 5002306 |
11/8/2022 | wwlib.dll | 16.0.5369.1000 | 5002223 |
2/14/2023 | wwlib.dll | 16.0.5383.1000 | 5002323 |
3/14/2023 | Outlook.exe | 16.0.5387.1000 | 5002254 |
5/9/2023 | wwlib.dll | 16.0.5395.1000 | 5002369 |
6/13/2023 | Outlook.exe | 16.0.5395.1000 | 5002387 |
6/6/2023 | MSO.dll | 16.0.5393.1000 | 5002308 |
7/11/2023 | Outlook.exe | 16.0.5404.1000 | 5002427 |
7/11/2023 | MSO.dll | 16.0.5404.1000 | 5002419 |
7/11/2023 | wwlib.dll | 16.0.5404.1000 | 5002406 |
8/8/2023 | Outlook.exe | 16.0.5408.1000 | 5002459 |
8/8/2023 | wwlib.dll | 16.0.5408.1001 | 5002464 |
9/12/2023 | Outlook.exe | 16.0.5413.1000 | 5002499 |
9/12/2023 | MSO.dll | 16.0.5413.1000 | 5002457 |
9/12/2023 | wwlib.dll | 16.0.5413.1000 | 5002497 |
11/7/2023 | Outlook.exe | 16.0.5422.1000 | 5002523 |
11/14/2023 | MSO.dll | 16.0.5422.1000 | 5002521 |
Version numbers of update branches for Office 365 clients (Click-to-run)
View the Microsoft Support Lifecycle information for Outlook 2016
Outlook 2013
Release Date | File | File Version | KB Article |
RTM - 1/9/2013 | Outlook.exe | 15.0.4420.1000 | |
SP1 - 2/25/2014 | Outlook.exe | 15.0.4569.1506 | 2817430 |
3/11/2014 | Outlook.exe | 15.0.4569.1503 | 2863911 |
4/8/2014 | Outlook.exe | 15.0.4605.1000 | 2878323 |
4/8/2014 | MSO.dll | 15.0.4605.1000 | 2863880 |
5/13/2014 | Outlook.exe | 15.0.4615.1000 | 2880961 |
5/13/2014 | MSO.dll | 15.0.4615.1000 | 2880454 |
5/13/2014 | wwlib.dll | 15.0.4615.1000 | 2880455 |
6/10/2014 | Outlook.exe | 15.0.4623.1000 | 2881040 |
6/10/2014 | MSO.dll | 15.0.4623.1001 | 2881043 |
6/10/2014 | wwlib.dll | 15.0.4623.1000 | 2881005 |
7/8/2014 | Outlook.exe | 15.0.4631.1000 | 2882991 |
7/8/2014 | MSO.dll | 15.0.4631.1000 | 2880987 |
7/8/2014 | wwlib.dll | 15.0.4631.1000 | 2881080 |
8/12/2014 | Outlook.exe | 15.0.4641.1001 | 2881011 |
8/12/2014 | MSO.dll | 15.0.4641.1001 | 2883052 |
8/12/2014 | wwlib.dll | 15.0.4641.1000 | 2883058 |
8/19/2014 | Outlook.exe | 15.0.4641.1001 | 2889859 |
9/9/2014 | Outlook.exe | 15.0.4649.1000 | 2889873 |
9/9/2014 | MSO.dll | 15.0.4649.1000 | 2889848 |
9/9/2014 | wwlib.dll | 15.0.4649.1000 | 2889852 |
10/14/2014 | Outlook.exe | 15.0.4659.1000 | 2889951 |
10/14/2014 | MSO.dll | 15.0.4659.1001 | 2889953 |
10/14/2014 | wwlib.dll | 15.0.4659.1000 | 2889939 |
11/11/2014 | Outlook.exe | 15.0.4667.1000 | 2899544 2899504 |
11/11/2014 | MSO.dll | 15.0.4667.1001 | 2899493 |
11/11/2014 | wwlib.dll | 15.0.4667.1000 | 2899500 |
12/17/2014 | Outlook.exe | 15.0.4675.1003 | 2910923 |
12/9/2014 | MSO.dll | 15.0.4675.1002 | 2920734 |
12/9/2014 | wwlib.dll | 15.0.4675.1000 | 2910916 |
2/10/2015 | Outlook.exe | 15.0.4693.1000 | 2956087 |
2/10/2015 | MSO.dll | 15.0.4693.1001 | 2920798 |
2/10/2015 | wwlib.dll | 15.0.4693.1000 | 2956085 |
3/10/2015 | Outlook.exe | 15.0.4701.1000 | 2956170 |
3/10/2015 | MSO.dll | 15.0.4701.1000 | 2956151 |
3/10/2015 | wwlib.dll | 15.0.4701.1001 | 2956163 |
4/14/2015 | Outlook.exe | 15.0.4711.1000 | 2965270 |
4/14/2015 | MSO.dll | 15.0.4711.1000 | 2965218 |
4/14/2015 | wwlib.dll | 15.0.4711.1001 | 2965224 |
5/12/2015 | Outlook.exe | 15.0.4719.1001 | 3039799 |
5/12/2015 | MSO.dll | 15.0.4719.1000 | 3039700 |
5/12/2015 | wwlib.dll | 15.0.4719.1000 | 2965307 |
6/9/2015 | Outlook.exe | 15.0.4727.1000 | 3054855 |
6/9/2015 | MSO.dll | 15.0.4727.1001 | 3054853 |
6/9/2015 | wwlib.dll | 15.0.4727.1000 | 3039755 |
7/14/2015 | Outlook.exe | 15.0.4737.1000 | 3054940 |
7/14/2015 | MSO.dll | 15.0.4737.1001 | 3054925 |
7/14/2015 | wwlib.dll | 15.0.4737.1003 | 3054990 |
8/11/2015 | Outlook.exe | 15.0.4745.1000 | 3055012 |
8/11/2015 | MSO.dll | 15.0.4745.1000 | 3055001 |
8/11/2015 | wwlib.dll | 15.0.4745.1001 | 3055030 |
9/8/2015 | Outlook.exe | 15.0.4753.1002 | 3085495 |
9/8/2015 | MSO.dll | 15.0.4753.1001 | 3085480 |
9/8/2015 | wwlib.dll | 15.0.4753.1000 | 3085490 |
10/13/2015 | Outlook.exe | 15.0.4763.1000 | 3085579 |
10/13/2015 | MSO.dll | 15.0.4763.1000 | 3085566 |
10/13/2015 | wwlib.dll | 15.0.4763.1000 | 3085573 |
11/10/2015 | Outlook.exe | 15.0.4771.1000 | 3101488 |
11/10/2015 | MSO.dll | 15.0.4771.1001 | 3101360 |
11/10/2015 | wwlib.dll | 15.0.4771.1000 | 3101370 |
11/19/2015 | Outlook.exe | 15.0.4771.1000 | 2975838 |
12/8/2015 | Outlook.exe | 15.0.4779.1001 | 3114349 |
12/8/2015 | MSO.dll | 15.0.4779.1000 | 3114333 |
12/8/2015 | wwlib.dll | 15.0.4779.1001 | 3114342 |
1/12/2016 | Outlook.exe | 15.0.4783.1000 | 3114500 |
1/12/2016 | MSO.dll | 15.0.4787.1002 | 3114486 |
1/12/2016 | wwlib.dll | 15.0.4787.1000 | 3114494 |
2/9/2016 | Outlook.exe | 15.0.4797.1001 | 3114729 |
2/9/2016 | MSO.dll | 15.0.4797.1000 | 3114717 |
2/9/2016 | wwlib.dll | 15.0.4797.1000 | 3114724 |
3/8/2016 | Outlook.exe | 15.0.4805.1000 | 3114829 |
3/8/2016 | MSO.dll | 15.0.4805.1001 | 3114816 |
3/8/2016 | wwlib.dll | 15.0.4805.1001 | 3114824 |
4/5/2016 | Outlook.exe | 15.0.4815.1000 | 3114941 |
4/5/2016 | MSO.dll | 15.0.4815.1000 | 3114928 |
4/12/2016 | wwlib.dll | 15.0.4815.1000 | 3114937 |
5/3/2016 | Outlook.exe | 15.0.4823.1000 | 3115031 |
5/10/2016 | MSO.dll | 15.0.4823.1000 | 3115016 |
5/10/2016 | wwlib.dll | 15.0.4823.1000 | 3115025 |
6/7/2016 | Outlook.exe | 15.0.4833.1000 | 3115158 |
6/7/2016 | MSO.dll | 15.0.4833.1000 | 3115167 |
6/14/2016 | wwlib.dll | 15.0.4833.1000 | 3115173 |
7/12/2016 | Outlook.exe | 15.0.4841.1000 | 3115259 |
7/5/2016 | MSO.dll | 15.0.4841.1000 | 3115255 |
7/12/2016 | wwlib.dll | 15.0.4841.1000 | 3115292 |
8/9/2016 | Outlook.exe | 15.0.4849.1000 | 3115452 |
8/9/2016 | MSO.dll | 15.0.4849.1000 | 3115427 |
8/9/2016 | wwlib.dll | 15.0.4849.1000 | 3115449 |
9/13/2016 | Outlook.exe | 15.0.4859.1000 | 3118280 |
9/13/2016 | MSO.dll | 15.0.4859.1000 | 3118268 |
9/7/2016 | wwlib.dll | 15.0.4859.1001 | 3118276 |
10/4/2016 | Outlook.exe | 15.0.4867.1000 | 3118367 |
10/4/2016 | MSO.dll | 15.0.4867.1001 | 3118354 |
10/11/2016 | wwlib.dll | 15.0.4867.1002 | 3118345 |
11/1/2016 | Outlook.exe | 15.0.4875.1000 | 3127919 |
11/1/2016 | MSO.dll | 15.0.4875.1000 | 3127915 |
11/8/2016 | wwlib.dll | 15.0.4875.1000 | 3127932 |
12/6/2016 | Outlook.exe | 15.0.4885.1000 | 3127975 |
12/13/2016 | MSO.dll | 15.0.4885.1000 | 3127968 |
12/6/2016 | wwlib.dll | 15.0.4885.1000 | 3128004 |
1/3/2017 | Outlook.exe | 15.0.4893.1000 | 3141466 |
1/3/2017 | MSO.dll | 15.0.4893.1000 | 3141474 |
1/3/2017 | wwlib.dll | 15.0.4893.1000 | 3141464 |
2/7/2017 | Outlook.exe | 15.0.4903.1000 | 3141495 |
2/7/2017 | MSO.dll | 15.0.4903.1000 | 3141491 |
3/14/2017 | Outlook.exe | 15.0.4911.1002 | 3115019 |
3/7/2017 | MSO.dll | 15.0.4911.1000 | 3162058 |
3/14/2017 | wwlib.dll | 15.0.4911.1000 | 3172464 |
4/11/2017 | Outlook.exe | 15.0.4919.1001 | 3172519 |
4/11/2017 | MSO.dll | 15.0.4919.1000 | 3178710 |
5/2/2017 | Outlook.exe | 15.0.4927.1001 | 3191889 |
5/9/2017 | MSO.dll | 15.0.4927.1000 | 3191885 |
5/9/2017 | wwlib.dll | 15.0.4927.1000 | 3178729 |
6/13/2017 | Outlook.exe | 15.0.4937.1000 | 3191938 |
6/13/2017 | MSO.dll | 15.0.4937.1000 | 3203393 |
6/13/2017 | wwlib.dll | 15.0.4937.1000 | 3203386 |
7/27/2017 | Outlook.exe | 15.0.4953.1001 | 4011078 |
7/11/2017 | MSO.dll | 15.0.4945.1001 | 3213555 |
7/5/2017 | wwlib.dll | 15.0.4945.1000 | 3213567 |
7/27/2017 | Outlook.exe | 15.0.4953.1001 | 4011078 |
8/1/2017 | MSO.dll | 15.0.4953.1000 | 4011070 |
8/1/2017 | wwlib.dll | 15.0.4953.1000 | 4011045 |
9/12/2107 | Outlook.exe | 15.0.4963.1000 | 4011090 |
9/12/2017 | MSO.dll | 15.0.4963.1002 | 4011103 |
9/5/2017 | wwlib.dll | 15.0.4963.1000 | 4011105 |
10/10/2017 | Outlook.exe | 15.0.4971.1000 | 4011178 |
10/3/2017 | MSO.dll | 15.0.4971.1000 | 4011169 |
10/3/2017 | wwlib.dll | 15.0.4971.1000 | 4011150 |
11/7/2017 | Outlook.exe | 15.0.4981.1000 | 4011252 |
11/7/2017 | MSO.dll | 15.0.4981.1000 | 4011229 |
11/14/2017 | wwlib.dll | 15.0.4981.1000 | 4011250 |
12/5/2017 | Outlook.exe | 15.0.4989.1000 | 4011282 |
12/5/2017 | MSO.dll | 15.0.4989.1000 | 4011279 |
12/12/2017 | wwlib.dll | 15.0.4989.1000 | 4011590 |
1/9/2018 | Outlook.exe | 15.0.4997.1000 | 4011637 |
1/9/2018 | MSO.dll | 15.0.4997.1000 | 4011636 |
1/9/0218 | wwlib.dll | 15.0.4997.1000 | 4011651 |
2/13/2018 | Outlook.exe | 15.0.5007.1000 | 4011697 |
2/13/2018 | MSO.dll | 15.0.5007.1000 | 4011690 |
3/6/2018 | MSO.dll | 15.0.5015.1000 | 4018297 |
3/13/2018 | wwlib.dll | 15.0.5015.1000 | 4011695 |
4/3/2018 | Outlook.exe | 15.0.5023.1000 | 4018303 |
4/10/2018 | MSO.dll | 15.0.5023.1000 | 4018330 |
4/10/2018 | wwlib.dll | 15.0.5023.1000 | 4018347 |
5/1/2018 | Outlook.exe | 15.0.5031.1000 | 4018376 |
5/1/2018 | MSO.dll | 15.0.5031.1000 | 4018389 |
5/8/2018 | wwlib.dll | 15.0.5031.1000 | 4018396 |
6/12/2018 | Outlook.exe | 15.0.5041.1000 | 4022169 |
6/5/2018 | wwlib.dll | 15.0.5041.1000 | 4022186 |
7/3/2018 | Outlook.exe | 15.0.5049.1000 | 4022242 |
7/3/2018 | MSO.dll | 15.0.5049.1000 | 4022166 |
7/10/2018 | wwlib.dll | 15.0.5049.1000 | 4022224 |
8/14/2018 | Outlook.exe | 15.0.5059.1000 | 4032240 |
8/14/2018 | MSO.dll | 15.0.5059.1000 | 4032239 |
9/4/2018 | MSO.dll | 15.0.5059.1000 | 4092469 |
9/11/2018 | wwlib.dll | 15.0.5067.1000 | 4032246 |
10/9/2018 | Outlook.exe | 15.0.5075.1001 | 4092477 |
10/9/2018 | MSO.dll | 15.0.5075.1001 | 4461445 |
10/9/2018 | wwlib.dll | 15.0.5075.1001 | 4461457 |
11/13/2018 | Outlook.exe | 15.0.5085.1000 | 4461486 |
11/6/2018 | MSO.dll | 15.0.5085.1000 | 4461482 |
11/13/2018 | wwlib.dll | 15.0.5085.1000 | 4461485 |
12/11/2018 | Outlook.exe | 15.0.5093.1000 | 4461556 |
1/8/2019 | Outlook.exe | 15.0.5101.1000 | 4461595 |
1/8/2019 | MSO.dll | 15.0.5101.1000 | 4461537 |
1/8/2019 | wwlib.dll | 15.5101.1001 | 4461594 |
2/5/2019 | Outlook.exe | 15.0.5111.1000 | 4462141 |
2/12/2019 | MSO.dll | 15.0.5111.1000 | 4462138 |
3/5/2019 | Outlook.exe | 15.0.5119.1000 | 4462206 |
3/5/2019 | MSO.dll | 15.0.5119.1000 | 4462201 |
4/2/2019 | Outlook.exe | 15.0.5125.1000 | 4464507 |
4/9/2019 | MSO.dll | 15.0.5125.1000 | 4464504 |
4/2/2019 | wwlib.dll | 15.0.5125.1000 | 4462140 |
5/7/2019 | Outlook.exe | 15.0.5137.1000 | 4464546 |
5/7/2019 | wwlib.dll | 15.0.5137.1000 | 4464545 |
6/11/2019 | wwlib.dll | 15.0.5145.1000 | 4464590 |
7/9/2019 | Outlook.exe | 15.0.5153.1000 | 4464592 |
7/9/2019 | MSO.dll | 15.0.5153.1000 |
4464558 |
7/2/2019 | wwlib.dll | 15.0.5153.1000 |
4475525 |
8/13/2019 | Outlook.exe | 15.0.5163.1000 | 4475563 |
8/6/2019 | MSO.dll | 15.0.5153.1000 | 4475556 |
8/13/2019 | wwlib.dll | 15.0.5163.1000 | 4475547 |
9/10/2019 | MSO.dll | 15.0.5172.1000 | 4475607 |
10/1/2109 | Outlook.exe | 15.0.5172.1000 | 4484096 |
12/10/2019 | wwlib.dll | 15.0.5197.1000 | 4484094 |
2/11/2020 | Outlook.exe | 15.0.5215.1000 | 4484156 |
3/10/2020 | wwlib.dll | 16.0.5223.1000 | 4484231 |
4/14/2020 | Outlook.exe | 15.0.5233.1000 | 4484281 |
4/14/2020 | MSO.dll | 15.0.5233.1000 | 4484117 |
4/14/2020 | wwlib.dll | 15.0.5233.1000 | 4484319 |
6/9/2020 | MSO.dll | 15.0.5249.1000 | 4484351 |
7/14/2020 | Outlook.exe | 15.0.5257.1000 | 4484363 |
7/7/2020 | MSO.dll | 15.0.5259.1000 | 4484442 |
7/14/2020 | wwlib.dll | 15.0.5259.1000 | 4484446 |
8/11/2020 | Outlook.exe | 15.0.5267.1000 | 4484486 |
8/11/2020 | wwlib.dll | 15.0.5267.1000 | 4484484 |
9/8/2020 | MSO.dll | 15.0.5275.1000 | 4484469 |
9/8/2020 | wwlib.dll | 15.0.5275.1000 | 4484522 |
10/13/2020 | Outlook.exe | 15.0.5285.1000 | 4484524 |
10/13/2020 | wwlib.dll | 15.0.5285.1000 | 4486692 |
11/3/2020 | wwlib.dll | 15.0.5293.1000 | 4486730 |
12/8/2020 | Outlook.exe | 15.0.5285.1000 | 4486732 |
1/12/2021 | wwlib.dll | 15.0.5311.1000 | 4486764 |
2/2/2021 | MSO.dll | 15.0.5319.1000 | 4486684 |
3/2/2021 | Outlook.exe | 15.0.5327.1000 | 4493174 |
3/9/2021 | MSO.dll | 15.0.5327.1000 | 4493228 |
4/13/2021 | Outlook.exe | 15.0.5337.1000 | 4504733 |
4/13/2021 | MSO.dll | 15.0.5337.1000 | 4504726 |
4/13/2021 | wwlib.dll | 15.0.5337.1000 | 4493208 |
5/11/2021 | MSO.dll | 15.0.5345.1002 | 5001925 |
5/11/2021 | wwlib.dll | 15.0.5345.1000 | 5001931 |
6/8/2021 | Outlook.exe | 15.0.5353.1000 | 5001934 |
6/8/2021 | MSO.dll | 15.0.5353.1000 | 5001953 |
7/13/2021 | MSO.dll | 15.0.5363.1000 | 5001983 |
9/14/2021 | MSO.dll | 15.0.5381.1000 | 5002007 |
10/12/2021 | wwlib.dll | 15.0.5389.1000 | 5001960 |
11/9/2021 | MSO.dll | 15.0.5397.1001 | 5002035 |
12/14/2021 | MSO.dll | 15.0.5407.1000 | 5002101 |
1/11/2022 | MSO.dll | 15.0.5415.1000 | 5002119 |
2/8/2022 | MSO.dll | 15.0.5423.1000 | 5002146 |
3/8/2022 | wwlib.dll | 15.0.5431.1000 | 5002068 |
5/10/2022 | wwlib.dll | 15.0.5449.1000 | 5002187 |
8/9/2022 | Outlook.exe | 15.0.5399.1000 | 5001990 |
9/13/2022 | MSO.dll | 15.0.5485.1000 | 5002166 |
10/11/2022 | MSO.dll | 15.0.5493.1000 | 5002279 |
11/8/2022 | wwlib.dll | 15.0.5501.1000 | 5002217 |
2/14/2023 | wwlib.dll | 15.0.5529.1000 | 5002316 |
3/14/2023 | Outlook.exe | 15.0.5537.1000 | 5002265 |
5/9/2023 | MSO.dll | 15.0.5553.1000 | 5002297 |
5/9/2023 | wwlib.dll | 15.0.5553.1000 | 5002365 |
6/13/2023 | Outlook.exe | 15.0.5537.1000 | 5002382 |
7/11/2023 | Outlook.exe | 15.0.5571.1000 | 5002432 |
7/11/2023 | MSO.dll | 15.0.5571.1000 | 5002400 |
7/11/2023 | wwlib.dll | 15.0.5571.1000 |
5002411 |
8/8/2023 | Outlook.exe | 15.0.5579.1000 | 5002449 |
8/8/2023 | MSO.dll | 15.0.5579.1001 | 5002439 |
8/8/2023 | wwlib.dll | 15.0.5579.1001 | 5002445 |
9/12/2023 | MSO.dll | 15.0.5589.1000 | 5002477 |
9/12/2023 | wwlib.dll | 15.0.5589.1000 | 5002483 |
11/7/2023 | Outlook.exe | 15.0.5603.1000 | 5002514 |
View the Pre-SP1 version list for Outlook 2013
Version numbers of Updates for Office 2013 or Office 365 (Click-to-run)
View the Microsoft Support Lifecycle information for Outlook 2013
Outlook 2010
View the version list for Outlook 2010
View the Microsoft Support Lifecycle information for Outlook 2010
Outlook 2007
View the version information for Outlook 2007
View the Microsoft Support Lifecycle information for Outlook 2007
Outlook 2003
View the version information for Outlook 2003
View the Microsoft Support Lifecycle information for Outlook 2003
Outlook for Mac (Office 365 Subscription & Outlook 2019 for Mac)
For more information on the different versions of Office for Mac, see the Deployment guide for Office for Mac.
View the Microsoft Support Lifecycle information for Outlook LTSC 2021
View the Microsoft Support Lifecycle information for Outlook 2019 for Mac
Outlook 2016 for Mac
View the version list for Outlook 2016 for Mac
View the Microsoft Support Lifecycle information for Outlook 2016 for Mac
For more information on the different versions of Office for Mac, see the Deployment guide for Office for Mac.
Outlook for Mac 2011
View the version list for Outlook for Mac 2011
View the Microsoft Support Lifecycle information for Outlook for Mac 2011