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

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

2986204

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

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)

Release Date File Version Article Direct Download
1/18/2018 16.9.0 (18011602) Release Notes Outlook Update Package
2/13/2018 16.10.0 (18021001) Release Notes Outlook Update Package
3/13/2018 16.11.0 (18031100) Release Notes Outlook Update Package
4/11/2018 16.12.0 (18041000) Release Notes Outlook update package
5/15/2018 16.13.0 (18051301) Release Notes Outlook update package
5/24/2018 16.13.1 (18052304) Release Notes Outlook update package
6/12/2018 16.14.0 (18061000) Release Notes Outlook Update Package
6/13/2018 16.14.1 (18061302) Release Notes Outlook Update Package
7/10/2018 16.15.0 (18070902) Release Notes Outlook Update Package
8/14/2018 16.16.0 (18081201) Release Notes Outlook update package
9/11/2018 16.17.0 (18090901) Release Notes Outlook Update Package
10/16/2018 16.18.0 (18101400) Release Notes Outlook Update Package
11/13/2018 16.19.0 (18110915) Release Notes Outlook Update Package
12/11/2018 16.20.0 (18120801) Release Notes Outlook Update Package
1/16/2019 16.21.0 (190101500) Release Notes Outlook Update Package
1/24/2019 16.21.0 (19011700) Release Notes Outlook Update Package
2/12/2019 16.22.0 (19021100) Release Notes Outlook Update Package
2/26/2019 16.22.1 (19022000) Release Notes Outlook Update Package
3/14/2019 16.23.0 (19030902) Release Notes Outlook Update Package
3/27/2019 16.23.1 (19032603) Release Notes Outlook Update Package
4/16/2019 16.24.0 (19041401) Release Notes Outlook Update Package
4/29/2019 16.24.1 (19042400) Release Notes Outlook Update Package
5/14/2019 16.25.0 (19051201) Release Notes Outlook Update Package
6/11/2019 16.26.0 (19090601) Release Notes
Outlook Update Package
7/16/2019 16.27.0 (19071500) Release Notes Outlook Update Package
8/13/2019 16.28.0 (19021202) Release Notes
Outlook Update Package
9/10/2019 16.29.0 (19090202) Release Notes Outlook Update Package
10/15/2019 16.30.0 (19101301) Release Notes
Outlook Update Package
11/12/2019 16.31.0 (19111002) Release Notes
Outlook Update Package
12/10/2019 16.32.0 (19120802) Release Notes
Outlook Update Package
1/14/2020 16.33.0 (20011301) Release Notes
Outlook Update Package
2/11/2020 16.34.0 (20020900) Release Notes
Outlook Update Package
3/10/2020 16.35.0 (20030802) Release Notes Outlook Update Package
4/21/2020 16.36.0 (20041300) Release Notes
Outlook Update Package
5/12/2020 16.37.0 (20051002) Release Notes
Outlook Update Package
6/16/2020 16.38.0 (20061401) Release Notes
Outlook Update Package
7/14/2020 16.39.0 (20071300) Release Notes
Outlook Update Package
8/11/2020 16.40.0 (20081000) Release Notes
Outlook Update Package
9/15/2020 16.41.0 (20091302) Release Notes
Outlook Update Package
10/13/2020 16.42.0 (20101102) Release Notes
Outlook Update Package
11/10/2020 16.43.0 (20110804) Release Notes
Outlook Update Package
12/15/2020 16.44.0 (20121301) Release Notes
Outlook Update Package
1/13/2021 16.45.0 (21011103) Release Notes
Outlook Update Package
2/16/2021 16.46.0 (21021202) Release Notes
Outlook Update Package
3/16/2021 16.47.0 (21031401) Release Notes
Outlook Update Package
4/13/2021 16.48.0 (21041102) Release Notes
Outlook Update Package
5/11/2021 16.49.0 (21050901) Release Notes
Outlook Update Package
6/15/2021 16.50.0 (21061301)
Release Notes
Outlook Update Package
7/13/2021 16.51.0 (21071101)
Release Notes
Outlook Update Package
8/10/2021 16.52.0 (21080801) Release Notes
Outlook Update Package
9/14/2021 16.53.0 (21091200) Release Notes
Outlook Update Package
10/12/2021 16.54.0 (21101001) Release Notes
Outlook Update Package
11/16/2021 16.55.0 (21111400) Release Notes
Outlook Update Package
12/14/2021 16.56.0 (21121100) Release Notes
Outlook Update Package
1/13/2022 16.57.0 (22011101) Release Notes
Outlook Update Package
2/16/2022 16.58.0 (22021501) Release Notes
Outlook Update Package
3/15/2022 16.59.0 (22031300) Release Notes
Outlook Update Package
4/12/2022 16.60.0 (22041000) Release Notes
Outlook Update Package
5/10/2022 16.61.0 (22050700) Release Notes
Outlook Update Package
6/14/2022 16.62.0 (22061100) Release Notes
Outlook Update Package
7/12/2022 16.63.0 (22070801) Release Notes
Outlook Update Package
8/16/2022 16.64.0 (22081401) Release Notes
Outlook Update Package
9/13/2022 16.65.0 (22091101) Release Notes
Outlook Update Package
10/11/2022 16.66.0 (22100900) Release Notes
Outlook Update Package
10/12/2022 16.66.1 (22101101) Release Notes
Outlook Update Package
10/31/2022 16.66.2 (22102801) Release Notes
Outlook Update Package
11/15/2022 16.67.0 (22111300) Release Notes
Outlook Update Package

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

 


See also

Exchange Server