This Wiki page lists the 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

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

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

Outlook 2010 Update File Version KB 
RTM - 7/15/2010 14.0.4760.1000
SP1 - 6/28/2011 14.0.6029.1000 2460049
SP2 - 7/22/2013 14.0.7015.1000 2687455
 8/11/2015 14.0.7155.5000 3055041
 9/8/2015 14.0.7157.5000 3085522
 10/13/2015 14.0.7160.5000 3085604
 11/10/2015 14.0.7162.5003 3101535
 12/8/2015 14.0.7164.5000 3114409
 12/16/2015 14.0.7165.5000 3115460
 1/12/2016 14.0.7165.5000 3114570
 2/9/2016 14.0.7166.5000 3114756
 3/8/2016 14.0.7167.5000 3114883
 4/5/2016 14.0.7168.5000 3114996
 5/3/2016 14.0.7169.5000 3115127
 7/12/2016 14.0.7169.5000 3115246
 8/9/2016 14.0.7172.5000 3115474
 9/13/2016 14.0.7172.5000 3118313
 4/11/2017 14.0.7180.5001 3118388
 5/2/2017 14.0.7181.5000 3191906
 6/13/2017 14.0.7182.5000 3203467
 7/27/2017 14.0.7187.5000 2956078
 9/12/2017 14.0.7188.5000 4011089
 10/10/2017 14.0.7189.5000 4011196

View the Pre-SP2 version list for Outlook 2010

View the Microsoft Support Lifecycle information for Outlook 2010


Outlook 2007

Outlook 2007 Update File Version KB 
RTM - 11/30/2006 12.0.4518.1014
SP1 - 12/8/2007 12.0.6212.1000 936982
SP2 - 4/24/2009 12.0.6423.1000 953195
SP3 - 10/25/2011 12.0.6607.1000 2526086
 12/13/2011 12.0.6656.5000 2596993
 3/7/2012 12.0.6658.5002 2597964
 4/24/2012 12.0.6661.5003 2598135
 6/26/2012 12.0.6662.5000 2687262
 8/28/2012 12.0.6664.5000 2687336
 10/30/2012 12.0.6668.5000 2687540
 11/13/2012 12.0.6665.5003 2687404
 2/12/2013 12.0.6673.5000 2760822
 4/9/2013 12.0.6673.5000 2799874
 8/13/2013 12.0.6680.5000 2768023
 4/8/2014 12.0.6691.5000 2863811
 3/8/2016 12.0.6744.5000 2880510
 8/9/2016 12.0.6753.5000 3114981
 9/13/2016 12.0.6753.5000 3118303
 4/11/2017 12.0.6767.5000 3127890
 6/13/2017 12.0.6770.5000 3191898
 7/27/2017 12.0.6774.5000 3213643
 9/12/2017 12.0.6776.5000 4011086

View the Pre-SP3 version list for Outlook 2007

View the Microsoft Support Lifecycle information for Outlook 2007

Outlook 2003

Outlook 2003 Update File Version KB 
RTM - 11/20/2003 11.0.5510.0
SP1 - 7/26/2004 11.0.6353.0 842532
SP2 - 9/26/2005 11.0.7969.0 887616
SP3 - 9/17/2007 11.0.8173.0 923618
 12/14/2010 11.0.8326.0 2449798

View more file version information for Outlook 2003

View the Microsoft Support Lifecycle information for Outlook 2003

 


Outlook 2016 for Mac

Release Date File Version KB   Direct Download
Public Preview
10/31/2014
15.3 (141024)

 

 
12/16/2014 15.4 (141114) 3025088  
1/20/2015 15.6 (150113) 3032066  
3/5/2015 15.8 (150303) 3038443  
3/13/ 2015 15.8.1 (150311) 3048177  
3/31/2015 15.8.2 (150328) 3048674  
4/14/2015 15.9 (150408) 3055707  
5/12/2015 15.10 (150508) 3048682  
6/10/2015 15.11 (150609) 3048692  
6/23/2015 15.11.1 (150618) 3074179  
7/9/2015 15.11.2 (150701) 3074479  
7/28/2015 15.12.3 (150724) 3074482  
8/11/2015 15.13.1 (150807) 3085420  
9/15/2015 15.14 (150911) 3088502  
9/23/2015 15.14.2 (150923) 3098225  
10/13/2015 15.15 (151008) 3097264  
11/10/2015 15.16 (151105) 3102925  
12/10/2015 15.17 (151206) 3119518  
12/17/2015 15.17.1 (151217) 3127248  
1/12/2016 15.18 (160109) 3133711  
2/16/2016 15.19.1 (160212) 3134241  
3/16/2016 15.20 (160315) 3138327  
4/12/2016 15.21.1 (160411) 3114937  
5/10/2016 15.22 (160506) 3155777  
6/14/2016 15.23 (160604) 3165798  
7/12/2016 15.24 (160709) 3170460  
8/22/2016 15.25 (160817) 3179163  
9/13/2016 15.26 (160910) 3186807  
10/11/2016 15.27 (161010) 3193438  
11/15/2016 15.28 (161115) 3198798  
12/13/2016 15.29 (161209) Release Notes Outlook Update Package
1/11/2017 15.30 (170107) Release Notes Outlook Update Package
2/16/2017 15.31. (170216) Release Notes Outlook Update Package
3/14/2017 15.32. (170309) Release Notes Outlook Update Package
4/11/2017 15.33. (170409)
Release Notes
Outlook Update Package
5/16/2017 15.34 (170515) Release Notes Outlook Update Package
6/13/2017 15.35 (170610) Release Notes Outlook Update Package
7/11/2017 15.36 (170702) Release Notes Outlook Update Package
8/15/2017 15.37 (170815) Release Notes Outlook Update Package
9/12/2017 15.38 (170902) Release Notes Outlook Update Package
10/10/2017 15.39 (171010) Release Notes Outlook Update Package
11/14/2017 15.40 (171108) Release Notes Outlook Update Package

View the Microsoft Support Lifecycle information for Outlook 2016 for Mac

 


Outlook for Mac 2011

Release Date File Version KB 
RTM - 10/26/2010 14.0.0
11/9/2010 14.0.1 2454823
12/13/2010 14.0.2 2476509
SP1 - 4/12/2011 14.1.0 2525412
6/14/2011 14.1.2 2555784
9/13/2011 14.1.3 2598783
12/13/2011 14.1.4 2644347
SP2 - 4/12/2012 14.2.0 2685940
5/8/2012 14.2.2 2665351
7/10/2012 14.2.3 2721015
9/19/2012 14.2.4 2742588
11/13/2012 14.2.5 2764047
SP3 - 1/29/2013 14.3.0 2793758
2/11/2013 14.3.1 2814835
3/12/ 2013 14.3.2 2817452
5/7/2013 14.3.4 2830450
6/11/2013 14.3.5 2848689
7/16/2013 14.3.6 2869604
9/10/2013 14.3.7 2877813
10/8/2013 14.3.8 2889496
11/19/2013 14.3.9 2902808
4/8/2014 14.4.1 2939132
5/27/2014 14.4.2 2970766
6/24/2014 14.4.3 2978808
8/26/2014 14.4.4 2994002
10/14/2014 14.4.5 3004865
11/11/2014 14.4.6 3016338
12/9/2014 14.4.7 3018888
2/10/2015 14.4.8 3034381
4/14/2015 14.4.9 3051737
5/12/2015 14.5.0 3062536
5/19/2015 14.5.1 3048688
6/16/2015 14.5.2 3048691
7/14/2015 14.5.3 3073865
8/11/2015 14.5.4 3081349
9/8/2015 14.5.5 3088501
10/7/2015 14.5.6 3098229
10/13/2015 14.5.7 3097266
11/10/2015 14.5.8 3102924
12/10/2015 14.5.9 3119517
1/12/2016 14.6.0 3133699
2/16/2016 14.6.1 3137721
3/16/2016 14.6.2 3138328
4/12/2016 14.6.3 3154208
5/10/2016 14.6.4 3155776
6/14/2016 14.6.5 3165796
7/12/2016 14.6.6 3170463
8/22/2016 14.6.7 3179162
9/13/2016 14.6.8 3186805
10/11/2016 14.6.9 3193442
11/15/2016 14.7.0 3198807
12/13/2016 14.7.1 3198808
3/14/2017 14.7.2 3198809
4/11/2017 14.7.3 3212218
5/16/2017 14.7.4 3212221
6/13/2017 14.7.5 3212223
7/11/2017 14.7.6 3212224
9/12/2017 14.7.7 3212225

View the Microsoft Support Lifecycle information for Outlook for Mac 2011

 


See also

Exchange Server