SharePoint Server: "The search service is not able to connect to the machine that hosts the administration component"

Issue

The search service is not able to connect to the machine that hosts the administration component. Verify that the administration component ‘GUID’ in search application ‘Search Service Application’ is in a good state and try again
In Farm Search Administration page when you click on “Modify Topology” you get error “An unhandled exception occurred in the user interface.Exception Information: Exception has been thrown by the target of an”

Cause

Search is not able to connect is because of many reasons, In this article I am providing all possible causes and the solutions.

Solutions

Solution 1

In the end it turns out to be that the application pool that hosts the search service application somehow doesn’t have the correct access.
You can simply change the application pool to use SharePoint Web Services System for search service applications and check.
1. Click on Start > Run > Type Inetmgr > Click OK 

1. In IIS > Expand server > Expand sites > Expand “SharePoint Web Services”
   
2. Now check all the GUID 1 by 1 in content view unless you find searchadmin.svc and searchservice.svc
    
3. Right click GUID go to advance settings
    
4. Change the application to “SharePoint Web Services” > Click OK
    

Solution 2

Enable the timer job and do IIS reset:
1. Run below PS command to know the status of timer job
Get-SPTimerJob job-application-server-admin-service
Result ==> Is Disabled: True

1. Run below PS command to enable the service.
   Enable-SPTimerJob job-application-server-admin-service
   Result ==> IsDisabled: False
2. Do Net Stop sptimerv4
3. Do Net start sptimerv4
4. Do iisreset

Solution 3

Ensure the account has full control permissions on the Search service application and IIS account used by this service application

Follow below steps
1. Open Central Admin  > Select Security > Select “Configure service accounts”
 

1. 

1. Select the search service application
    
2. For “select account for this component” Select a account which has full permission

SharePoint 2013 "The search service is not able to connect to the machine that hosts the administration component"

Issue

SharePoint Server: 

"The search service is not able to connect to the machine that hosts the administration component" after August 2018 CU

Cause

You need to check the EventViewer after installing August 2018 CU binaries and you can see there is a backward compatibility issue for the Search database if you are applying the patch directly after SP1.

EventViewer Log

"The synchronization operation of the search component: 5a44ee64-4c85-4c9e-a5f6-6098cf079cb1 associated to the search application: Search Service Application on server: DXXXXXV has failed. The component version is not compatible with the search database: SharePoint_Search_AdminDB_CrawlStore on server: DBPROD. The possible cause for this failure is The database schema version is less than the minimum backwards compatibility schema version that is supported for this component. To resolve this problem upgrade this database.."

Resolution

Run the PSConfig and it will upgrade Search databases Schema and which will bring the search up and running.

AppFabric (Distributed Cache)- Patched on its own in SharePoint 2013

Patching SharePoint is one of those things I enjoy. The excitement of unwrapping a brand new SharePoint patch is second only to getting a new tie or socks on Christmas morning. When I heard this news I just had to share it with you all. We get to patch AppFabric now! Hurray!

SharePoint 2013 introduced some new functionality, the Distributed Cache. Simply put, the Distributed Cache is a service that caches things like authentication tokens and social newsfeeds, stuff like that. The whole list is in this TechNet article. The process that does this is a product called AppFabric, and it’s installed and configured when you run the SharePoint 2013 Prereq installer. AppFabric is a standalone product, but it’s best to let SharePoint handle the installation and configuration. The Distributed Cache took a page out of the User Profile Service’s book. It can be very fussy when it’s angry.

When SharePoint 2013 first came out we were given strict instructions by Microsoft not to fool with the AppFabric pieces of the Distributed Cache. We might fancy ourselves AppFabric experts, but SharePoint wants it a very particular way, so we should use SharePoint tools to interact with that. That included patching. We were told even if an AppFabric patch knocked on our door and asked us nicely to install it, even if it used Sir or Ma’am, we were to say no. We were to let the SharePoint patches take care of patching AppFabric and the Distributed Cache.

Until now.

Recently Microsoft reversed its position on SharePoint administrators patching AppFabric. Not only are we now allowed to patch AppFabric, it’s actually recommended that we patch it to at least CU4.

SharePoint 2013 Build Numbers - Versions

To see which build your farm is, go to Central Administration > System Settings > Manage servers in your farm (/_admin/FarmServers.aspx)

Or using Windows PowerShell: (get-spfarm).buildversion

To see which build your farm is at with Fiddler, open the site in question and view Inspectors > Headers and under Miscellaneous check the build under MicrosoftSharePointTeamServices header.

To see which build your products are, go to Central Administration > Upgrade and Migration > Check Product and patch installation status. (/_admin/PatchStatus.aspx)

To greatly reduce the time it takes to patch a SharePoint 2013 server, read this blog post by Russ Maxwell, Why SharePoint 2013 Cumulative Update takes 5 hours to install? It explains why the process takes so long and provides a handy script that makes the patch install much more quickly. Do yourself a favor and check it out.

AppFabric needs to be patched too.

Patch terminology KB article.

Build Number	Build Name	Component	Information Link	Download Link	Notes
15.0.4128.1014	Beta	SharePoint Foundation 2013		Download
15.0.4128.1014	Beta	SharePoint Server 2013		Download
15.0.4128.1014	Beta	Project Server 2013		Download
​	​	​	​	​	​
​15.0.4420.1017	​RTM	​​SharePoint Foundation 2013	​	​Download	​
​​15.0.4420.1017	​RTM	​SharePoint Server 2013	​	​Download	​
​​15.0.4420.1017	​RTM	​Project Server 2013	​	​Download	​
​	​	​	​	​	​
​15.0.4433.1506	​December 2012 Hotfix	​SharePoint Server 2013	​KB2752058	​Download
​15.0.4433.1506	​December 2012 Hotfix	​SharePoint Server 2013 (coreserver)	​KB2752001	​Download	​
​	​	​	​	​	​
​15.0.4481.1005	​March 2013 Public Update	​SharePoint Foundation 2013	​KB2768000	​Download	​
​​15.0.4481.1005	​​March 2013 Public Update	​SharePoint Server 2013	​KB2767999	​Download	​
​​15.0.4481.1005	​​March 2013 Public Update	​Project Server 2013	​KB2768001	​Download	​
​	​	​	​	​	​
​15.0.4505.1002	​April 2013 CU	​​SharePoint Foundation 2013	​KB2751999	​Download
​15.0.4505.1005	​​April 2013 CU	​SharePoint Server 2013	​KB2726992	​Download	​
​15.0.4505.1005	​April 2013 CU	​Project Server 2013	​KB775426	​Download	​
​	​	​	​	​	​
​15.0.4517.1003	​June 2013 CU	​SharePoint Foundation 2013	​KB2817346	​Download
​15.0.4517.1005	​June 2013 CU	​​SharePoint Server 2013	​KB2817414	​Download	​
​	​June 2013 CU	​Project Server 2013	​KB2817415	​Download	​
​	​	​	​	​	​
​15.0.4535.1000	​August 2013 CU	​​SharePoint Foundation 2013	​KB2817517	​Download
​	​​August 2013 CU	​SharePoint Server 2013	​KB2817616	​Download	​
​	​​August 2013 CU	​Project Server 2013	​KB2817615	​Download	​
​	​	​	​	​	​
​15.0.4551.1001	​October 2013 CU	​SharePoint Foundation 2013	​KB2825674	​Download	​
​15.0.4551.1005	​October 2013 CU	​SharePoint Server 2013	​KB2825647	​Download	​
​	​October 2013 CU	​Project Server 2013	​	​	​
​	​	​	​	​	​
​15.0.4551.1508	​December 2013 CU	​SharePoint Foundation 2013	​KB2849961	​Download	​​Bugs, Notes, and Regressions
​15.0.4551.1511	​	​SharePoint Server 2013	​KB2850024	​Download	​
​15.0.4551.1508	​	​Project Server 2013	​KB2837668	​Download	​
​	​	​	​	​	​
​15.0.4569.1000*	​Service Pack 1	​SharePoint Foundation 2013	​KB2817439	​Download	​
​	​	​SharePoint Server 2013	​KB2817429	​Download	​
​	​	​Project Server 2013	​KB2817434	​Download	​
​	​	​	​	​	​
​15.0.4571.1502*	​Service Pack 1 Mark 2	​SharePoint Foundation 2013	​KB2880551	​Download	​
	​​	​SharePoint Server 2013	​KB2880552	​Download	​
	​​	​Project Server 2013	​KB2880553	​Download	​
​	​	​	​	​	​
​​15.0.4605.1000	​April 2014 CU	​​SharePoint Foundation 2013	KB2863892	​Download	​​
​	​	​​SharePoint Server 2013	​KB2878240	​Download	​
​	​	​Project Server 2013	KB2880484	Download	​
​	​	​	​	​	​
​15.0.4615.1001	​MS14-022	​SharePoint Foundation 2013	​KB2952166	​Links in KB	​
​	​	​SharePoint Server 2013	​KB2952166	​Links in KB	​
​	​	​Project Server 2013	​KB2952166	​Links in KB	​
​	​	​	​	​	​
15.0.4617.1000	​June 2014 CU	SharePoint Foundation 2013	​KB2881063	​Download	​
​	​	​SharePoint Server 2013	KB2881061	​Download	​
​	​	​Project Server 2013	KB2881062	​Download	​
​	​	​	​	​	​
​ 15.0.4631.1001	​July 2014 CU	​SharePoint Foundation 2013	​KB2882999	​Download	​​
​	​	​​SharePoint Server 2013	​KB2882989	​Download
​	​	​Project Server 2013	​KB2882990	​Download	​
​	​	​	​	​	​
​15.0.4641.1001	​August 2014 CU	​SharePoint Foundation 2013	​KB2883081	​Download	​
​	​	​SharePoint Server 2013 (1/5)	​KB2760213	​Download	​
​	​	​​SharePoint Server 2013 (2/5)	​KB2880559	​Download	​
​	​	​​SharePoint Server 2013 (3/5)	​KB2883078	Download	​
​	​	​​SharePoint Server 2013 (4/5)	​KB2883085	​Download	​
​	​	​​SharePoint Server 2013 (5/5)	​KB2883086	​Download	​
​	​	​Project Server 2013	​KB2883083	​Download	​
​	​	​	​	​	​
​15.0.4649.1001	​September 2014 CU	​SharePoint Foundation 2013	​KB2883087	​Download	​
​	​	​SharePoint Server 2013	​KB2883068	​Download	​
​	​	​Project Server 2013	​KB2883072	​Download	​
​	​	​	​	​	​
​15.0.4659.1001	​October 2014 CU	​SharePoint Foundation 2013	​KB2889946	​Download	​​
​	​	​SharePoint Server 2013 (1/3)	​KB2899469	​Download	​
​	​	​SharePoint Server 2013 (2/3)	​KB2880962	​Download	​
​	​	​SharePoint Server 2013 (3/3)	​KB2880485	​Download	​
​	​	​Documentum Connector	​KB2752098	​Download	​
​	​	​Project Server 2013	​KB2889959	​Download	​
​	​	​	​	​	​
​15.0.4667.1000	​November 2014 CU	​SharePoint Foundation 2013	​KB2899468	​Download	​
​	​	​​SharePoint Server 2013	​KB2889944	​Download	​
​	​	​Project Server 2013	​KB2889949	​Download	​
​	​	​	​	​	​
​15.0.4675.1000	​December 2014 CU	​SharePoint Foundation 2013	​KB2910945	​Download	​
​	​	​SharePoint Server 2013	​KB2910938	Download​	​
​	​	​Project Server 2013	​KB2910911	​Download	​
​	​	​	​	​	​
​15.0.4693.1001	​February 2015 CU	​​SharePoint Foundation 2013	​KB2920801	Download	​
​	​	​​SharePoint Server 2013	​KB2920804	​Download	​
​	​	​​Project Server 2013	​KB2920796	​Download	​
​	​	​	​	​	​
​15.0.4701.1001	​March 2015 CU	​SharePoint Foundation 2013	​KB2956159	​Download	​
​	​	​SharePoint Server 2013	​KB2956166	​Download	​
​	​	​Project Server 2013	​KB2956162	​Download	​
​	​	​	​	​	​
​15.0.4711.1000	​April 2015 CU	​SharePoint Foundation 2013	​KB2965261	​Download	​
​	​	​​SharePoint Server 2013	​KB2965266	​Download	​
​	​	​Project Server 2013	​KB2965263	​Download	​
​	​	​	​	​	​
​15.0.4719.1002	​May 2015 CU	​SharePoint Foundation 2013	KB3039747	Download	​​​
​	​	​SharePoint Server 2013	​KB3039780	Download	​
​	​	​Project Server 2013	​KB3039753	Download	​
​	​	​	​	​	​
​15.0.4727.1001	​June 2015 CU	​SharePoint Foundation 2013	​KB3054864	​Download	​
​	​	​SharePoint Server 2013	​KB3054866	​Download	​
​	​	​Project Server 2013	​KB3054865	​Download	​
​	​	​	​	​	​
​​15.0.4737.1001	​July 2015 CU	​SharePoint Foundation 2013	KB3054931​	Download	​
​	​	​SharePoint Server 2013	KB3054937​	Download	​
​	​	​Project Server 2013	KB3054933	Download	​
​	​	​	​	​	​
​​​15.0.4745.1001	​August 2015 CU	​​SharePoint Foundation 2013	​KB3055004	Download	​​
​	​	​SharePoint Server 2013	KB3055009	Download	​
​	​	​​Project Server 2013	KB3055005	​Download	​
​	​	​	​	​	​
​15.0.4753.1000	​September 2015 CU	SharePoint Foundation 2013	​KB2975894	Download	​
​	​	​SharePoint Server 2013	KB2986213	Download	​
​	​	​Project Server 2013	KB2986195	Download	​
​	​	​	​	​	​
​15.0.4763.1000	​October 2015 CU	​SharePoint Foundation 2013	​KB3085488	​Download	​​
​	​	​SharePoint Server 2013	​KB3085492	​Download	​
​	​	​Project Server 2013	​KB3085489	​Download	​
​	​	​	​	​	​
​15.0.4771.1000	​November 2015 CU	​SharePoint Foundation 2013	​KB3101368	​Download	​
​	​	​SharePoint Server 2013	​KB3101373	​Download	​
​	​	​Project Server 2013	​KB3101369	​Download	​
​	​	​	​	​	​
​15.0.4779.1000	​​December 2015 CU	​SharePoint Foundation 2013	​KB3114339	​Download	​​
​	​	​SharePoint Server 2013	​KB3114345	​Download	​
​	​	​​Project Server 2013	​KB3114341	​Download	​
​	​	​	​	​	​
​15.0.4787.1000	​January 2016 CU	​SharePoint Foundation 2013	​KB3114492	​Download	​
​	​	​SharePoint Server 2013	​KB3114497	​Download​	​
​	​	​Project Server 2013	​KB3114493	​Download	​
​	​	​	​	​	​
​15.0.4797.1000	​February 2016 CU	​SharePoint Foundation 2013	​KB3114722	​Download	​
​	​	​​SharePoint Server 2013	​KB3114726	​Download	​
​	​	​Project Server 2013	​KB3114723	​Download	​
​	​	​	​	​	​
​15.0.4805.1000	​March 2016 CU	​SharePoint Foundation 2013	​KB3114822	​Download	​​
​	​	​SharePoint Server 2013	​KB3114827	​Download	​
​	​	​Project Server 2013	​KB3114823	​Download	​
​	​	​	​	​	​
​15.0.4815.1000	​April 2016 CU	​SharePoint Foundation 2013	​KB3114935	​Download	​
​	​	​​SharePoint Server 2013	​KB3114938	​Download	​
​	​	​​Project Server 2013	​KB3114936	​Download	​
​	​	​	​	​	​
​15.0.4823.1003	​May 2016 CU	​SharePoint Foundation 2013	​KB3115023	​Download	​
​	​	​SharePoint Server 2013	​KB3115029	​Download	​
​	​	​Project Server 2013	​KB3115024	​Download	​
​	​	​	​	​	​
​15.0.4833.1003	​June 2016 CU	​SharePoint Foundation 2013	​KB3115171	​Download	​
​	​	​SharePoint Server 2013	​KB3115174	​Download	​
​	​	​Project Server 2013	​KB3115172	​Download	​
​	​	​	​	​	​
​15.0.4841.1000	​July 2016 CU	​SharePoint Foundation 2013	​KB3115290	​Download	​
​	​	​SharePoint Server 2013	​KB3115293	​Download	​
​	​	​Project Server 2013	​KB3115291	​Download	​
​	​	​	​	​	​
​15.0.4849.1000	​August 2016 CU	​SharePoint Foundation 2013	​KB3115447	​Download	​
​	​	​SharePoint Server 2013	​KB3115450	​Download	​
​	​	​Project Server 2013	​KB3115448	​Download	​
​	​	​	​	​	​
​15.0.4859.1000	​September 2016 CU	​SharePoint Foundation 2013	​KB3118271	​Download	​​
​	​	​SharePoint Server 2013	​KB3118279	​Download	​
​	​	​Project Server 2013	​KB3118274	​Download	​
​	​	​	​	​	​
​15.0.4867.1002	​October 2016 CU	​SharePoint Foundation 2013	​KB3118361	​Download	​​​
​	​	​​SharePoint Server 2013	​KB3118366	​Download	​
​	​	​Project Server 2013	​KB3118365	​Download	​
​	​	​	​	​	​
​15.0.4875.1000	​November 2016 CU	​SharePoint Foundation 2013	​KB3127930	​Download	​​​​
​	​	​SharePoint Server 2013	​KB3127933	​Download	​
​	​	​Project Server 2013	​KB3127931	​Download	​
​	​	​	​	​	​
​15.0.4885.1000	​December 2016 CU	​SharePoint Foundation 2013	​KB3128001	​Download	​
​	​	​SharePoint Server 2013	​KB3128005	​Download	​
​	​	​Project Server 2013	​KB3128003	​Download	​
​	​	​	​	​	​
​15.0.4893.1001	​January 2017 CU	​SharePoint Foundation 2013	​KB3141479	​Download	​
​	​	​​SharePoint Server 2013	​KB3141481	​Download	​
​	​	​Project Server 2013	​KB3141480	​Download	​
​	​	​	​	​	​
​	​February 2017	​No Updates	​	​	​
​	​	​	​	​	​
​15.0.4911.1001	​March 2017 CU	​SharePoint Foundation 2013	​KB3172456	​Download	​
​	​	​SharePoint Server 2013	​KB3172497	​Download	​
​	​	​Project Server 2013	​KB3172462	​Download	​
​	​	​	​	​	​
​15.0.4919.1003	​April 2017 CU	​​SharePoint Foundation 2013​	​KB3178727	​Download	​
​	​	​SharePoint Server 2013	​KB3178730	​Download	​
​	​	​Project Server 2013	​KB3178725	​Download	​
​	​	​	​	​	​
​15.0.4927.1001	​May 2017 CU	​​​SharePoint Foundation 2013​	​KB3191911	​Download	​
​	​	​SharePoint Server 2013	​KB3191913	​Download	​
​	​	​​Project Server 2013	​KB3191912	​Download	​
​	​	​	​	​	​
​15.0.4937.1001​	​June 2017 CU	​​​SharePoint Foundation 2013​	​KB3203428	​Download	​​
​	​	​​SharePoint Server 2013​	​KB3203430	​Download	​
​	​	​​​Project Server 2013	​KB3203429	​Download	​
​	​	​	​	​	​
​15.0.4945.1000	​July 2017 CU	​SharePoint Foundation 2013​	​KB3213563	​Download	​
​	​	​SharePoint Server 2013​	​KB3213569	​Download	​
​	​	​Project Server 2013	​KB3213566	​Download	​
​	​	​	​	​	​
​15.0.4953.1000	​August 2017 CU	​​SharePoint Foundation 2013​	​KB4011073	​Download	​​
​	​	​​SharePoint Server 2013​​	​KB4011076	​Download	​
​	​	​Project Server 2013	​KB4011074	​Download	​
​	​	​	​	​	​
​15.0.4963.1000	​September 2017 CU	​​​SharePoint Foundation 2013​	​KB4011132	​Download	​
​	​	​​​SharePoint Server 2013​​​	KB4011116​	​Download	​
​	​	​​Project Server 2013	​KB4011115	​Download	​
​	​	​	​	​	​
​15.0.4971.1000	​October 2017 CU	​SharePoint Foundation 2013​	​KB4011173	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4011177	​Download	​
​	​	​Project Server 2013	​KB4011175	​Download	​
​	​	​	​	​	​
​15.0.4981.1002	​November 2017 CU	​​SharePoint Foundation 2013​	​KB4011248	​Download	​
​	​	​​SharePoint Server 2013​​​	​KB4011251	​Download	​
​	​	​Project Server 2013	​KB4011249	​Download	​
​	​	​	​	​	​
​15.0.4989.1001	​December 2017 CU	​​​SharePoint Foundation 2013​	​KB4011588	​Download	​​
​	​	​​​SharePoint Server 2013​​​	​KB4011593	​Download	​
​	​	​Project Server 2013	​KB4011589	​Download	​
​	​	​	​	​	​
​15.0.4997.1001	​January 2018 CU	​​​​SharePoint Foundation 2013​	​KB4011649	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4011652	​Download	​
​	​	​Project Server 2013	​KB4011650	​Download	​
​	​	​	​	​	​
​15.0.5007.1000	​February 2018 CU	​​​​​SharePoint Foundation 2013​	​KB4011693	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4011696	​Download	​
​	​	​​Project Server 2013	​KB4011694	​Download	​
​	​	​	​	​	​
​15.0.5015.1000	​March 2018 CU	​SharePoint Foundation 2013​	​KB4018299	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4018302	​Download	​
​	​	​Project Server 2013	​KB4018301	​Download	​
​	​	​	​	​	​
​15.0.5023.1001	​April 2018 CU	​​SharePoint Foundation 2013​	​KB4018345	​Download	​​
​	​	​​SharePoint Server 2013​​​	​KB4018348	​Download	​
​	​	​Project Server 2013	​KB4018346​	​Download	​
​	​	​	​	​	​
​15.0.5031.1001	​May 2018 CU	​SharePoint Foundation 2013​	​KB4018394	​Download
​	​	​​​SharePoint Server 2013​​​	​KB4018397	​Download	​
​	​	​​Project Server 2013	​KB4018395	​Download	​
​	​	​	​	​	​
​15.0.5041.1000	​June 2018 CU	​​SharePoint Foundation 2013​	​KB4022184​	​Download	​
​	​	​	​	​	​
​​15.0.5049.1001	​​July 2018 CU	​​SharePoint Foundation 2013​	KB4022239	Download	​
​	​	​SharePoint Server 2013​​​	​KB4022241	​Download	​
​	​	​Project Server 2013	​KB4022240	​Download​	​

15.0.5059.1000	​August 2018 CU	​​SharePoint Foundation 2013​	​KB4032244	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4032247	​Download	​
​	​	​Project Server 2013	​KB4032245	​Download	​
​	​	​	​	​	​
​15.0.5067.1000	​September 2018 CU	​SharePoint Foundation 2013​	​KB4092474	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4092476	​Download	​
​	​	​Project Server 2013	​KB4092475	​Download​	​

15.0.5075.1000	​October 2018	​SharePoint Foundation 2013​	​KB4461455​	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4461458	​Download	​
​	​	​Project Server 2013	​KB4461456	​Download	​
​	​	​	​	​	​
​15.0.5085.1000	​November 2018	​​SharePoint Foundation 2013​	​KB4461508	​Download
​	​	​SharePoint Server 2013​​​	​KB4461510	​Download	​
​	​	​Project Server 2013	​KB4461509	​Download	​
​	​	​	​	​	​
​15.0.5093.1000	​December 2018	​​​SharePoint Foundation 2013​	​KB4461552	​Download	​​
​	​	​​SharePoint Server 2013​​​	​KB4461555	​Download	​
​	​	​Project Server 2013	​KB4461553	​Download	​
​	​	​	​	​	​
​15.0.5101.1000	​January 2019	​SharePoint Foundation 2013​	​KB4461603	​Download	​​
​	​	​SharePoint Server 2013​​​	​KB4461605	​Download	​
​	​	​​Project Server 2013	​KB4461604	​Download	​
​	​	​	​	​	​
​15.0.5111.1000	​February 2019	​​SharePoint Foundation 2013​	​KB4462150	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4462152	​Download	​
​	​	​Project Server 2013	​KB4462151	​Download	​
​	​	​	​	​	​
​15.0.5119.1001	​March 2019	​SharePoint Foundation 2013​	​KB4462217	​Download	​​
​	​	​SharePoint Server 2013​​​	​KB4462219	​Download	​
​	​	​​Project Server 2013	​KB4462218	​​​Download	​
​	​	​	​	​	​
​15.0.5127.1001	​April 2019	​​SharePoint Foundation 2013​	​KB4464512	​Download
​	​	​SharePoint Server 2013​​​	​KB4464514	​Download	​
​	​	​​​Project Server 2013​	​KB4464513	​​​Download​	​
​	​	​	​	​	​
​15.0.5137.1000	​May 2019	​​​SharePoint Foundation 2013​	​KB4464560	​Download	​​
​	​	​​SharePoint Server 2013​​​	​KB4464563	​Download	​
​	​	​Project Server 2013​	​KB4464562	​Download	​
​	​	​	​	​	​
​15.0.5145.1000	​June 2019	​SharePoint Foundation 2013​	​KB4464598	​Download	​
​	​	​​​SharePoint Server 2013​​​	​KB4464601	​Download	​
​	​	​Project Server 2013​	​KB4464600	​Download	​
​	​	​	​	​	​
​15.0.5153.1000	​July 2019	​SharePoint Foundation 2013​	​KB4475523	​Download
​	​	​SharePoint Server 2013​​​	​KB4475526	​Download	​
​	​	​Project Server 2013​	​KB4475524	​Download	​
​	​	​	​	​	​
​15.0.5163.1000	​August 2019	​SharePoint Foundation 2013​	​KB4475559	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4475561	​Download	​
​	​	​Project Server 2013​	​KB4475560	​Download​	​
​	​	​	​	​	​
​15.0.5172.1000	​September 2019	​SharePoint Foundation 2013​	​KB4475610	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4484095	​Download	​
​	​	​Project Server 2013	​KB4484093	​Download	​
​	​	​	​	​	​
​15.0.5179.1000	​October 2019	​SharePoint Foundation 2013​	​KB4484118	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4484121	​Download	​
​	​	​Project Server 2013	​KB4484120	​Download	​
​	​	​	​	​	​
​15.0.5189.1000	​November 2019	​​SharePoint Foundation 2013​	​KB4484153	​Download	​
​	​	​SharePoint Server 2013​​​	​KB4484155	​Download	​
​	​	​Project Server 2013	​KB4484154	​Download	​

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Office Web App 2013

To see which version of the OWA (also called the "Web Access Components" or "WAC") use the following PowerShell:  

(Invoke-WebRequest http://owa.contoso.com/m/met/participant.svc/jsonAnonymous/BroadcastPing).Headers["X-OfficeVersion"]

Build Number	Build Name	Information Link	Download Link
15.0.4420.1007	RTM		Download
	March 2013 PU whoops	KB2760486
15.0.4481.1005	March 2013 PU	KB2760445	Download
15.0.4481.1508	April 2013 CU	KB2810007	Download
15.0.4505.1001	April 2013 Hotfix	KB2799821	Download
15.0.4517.1003	June 2013 CU	KB2817350	Download
15.0.4535.1000	August 2013 CU	KB2817521	Download
15.0.4551.1003	October 2013 CU	KB2825686	Download
15.0.4551.1508	December 2013 CU	KB2850013	Download
​15.0.4551.1515	​MS14-001 Security Update	​KB2863879	​Download
​15.0.4569.1000	​Service Pack 1	​KB2817431	​Download
​15.0.4569.1000	​Service Pack 1 - Mark 2	​KB2880558	​Download
​15.0.4605.1001	​April 2014 CU	​KB2863899	​Download
​15.0.4615.1001	​MS14-022	​KB2952166	​Links in KB
​15.0.4623.1001	​June 2014 CU	​KB2881051	​Download
​15.0.4631.1000	​July 2014 CU	​KB2883003	​Download
​15.0.4641.1001	​August 2014 CU	​KB2883093	​Download
​15.0.4659.1001	​October 2014 CU	​KB2889898	​Download
​	​November 2014 CU	​None	​None
​15.0.4673.1000	​December 2014 CU	​KB2899574	​Download
​	​January 2015 CU	​None	​None
​15.0.4693.1001	​February 2015 CU	​KB2956101	​Download
​15.0.4701.1001	​March 2015 CU	​KB2956158	​Download
​15.0.4711.1000	​April 2015 CU	​​KB2965306	​Download
​15.0.4719.1002	​May 2015 CU	​KB3039748	​Download
​15.0.4727.1001	​June 2015 CU	​KB3054863	​Download
​15.0.4737.1001	​July 2015 CU	​KB3054930	Download
​15.0.4745.1001	​August 2015 CU	​KB3055003	Download
​15.0.4753.1001	​September 2015 CU	​KB3085487	Download
​15.0.4763.1000	​October 2015 CU	​KB3085571	​Download
​	​November 2015 CU	​No Updates	​
​	​December 2015 CU	​No Updates	​
​	​January 2016 CU	​No Updates	​
​15.0.4797.1001	​February 2016 CU	​KB3114338	​Download
​15.0.4805.1000	​March 2016 CU	​KB3114821	​Download
​15.0.4815.1000	​April 2016 CU	​KB3114934	​Download
​15.0.4823.1003	​May 2016 CU	​KB3115022	​Download
​15.0.4833.1003	​June 2016 CU	​KB3115170	​Download
​15.0.4841.1000	​July 2016 CU	​KB3115289	​Download
​​15.0.4849.1000	​August 2016 CU	​​KB3115446	​Download
​15.0.4859.1000	​September 2016 CU	KB3118270	​Download
​15.0.4867.1000	​October 2016 CU	​KB3118360	​Download
​15.0.4875.1000	​November 2016 CU	​KB3127929	​Download
​	​December 2016 CU	​No Updates	​
​	​January 2017 CU	​No Updates	​
​	​February 2017 CU	​No Updates	​
​15.0.4911.1001	​March 2017 CU	​KB3172457	​Download
​15.0.4919.1001	April 2017 CU​	​​KB3178725	Download​​
​15.0.4927.1001	​May 2017 CU	​KB3191888	​Download
​15.0.4937.1001	​June 2017 CU	​KB3203391​	Download​
​	July 2017 CU​	​No Updates	​
​	​August 2017 CU	​​No Updates	​
​15.0.4963.1001	​September 2017 CU	KB3213562​	Download​
​15.0.4971.1000	​	​KB4011231	​Download​
​15.0.4981.1002	​November 2017 CU	​KB4011247	​Download
​15.0.4989.1001	​December 2017 CU	​KB4011587	​Download​
​15.0.4997.1001	​January 2018 CU	​KB4011648	​Download​
​	​February 2018 CU	​​No updates	​
​15.0.5017.1001	​March 2018 CU	​KB4011692	​Download
​15.0.5023.1001	​April 2018 CU	​KB4018344	​Download​
​15.0.5031.1001	​May 2018 CU	​KB4018393	​Download​
​15.0.5041.1000	​June 2018 CU	​KB4022183​	​Download​

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Workflow Manager 2013

To see which version of Workflow Manager and Service Bus are installed, use the following PowerShell:

(Get-ChildItem -Path "C:\Program Files\Workflow Manager\1.0\Workflow\Artifacts\Microsoft.Workflow.Service.dll").VersionInfo

(Get-ChildItem -Path "C:\Program Files\Service Bus\1.0\Microsoft.ServiceBus.dll").VersionInfo

or

(Get-ChildItem -Path "C:\Program Files\Service Bus\1.1\Microsoft.ServiceBus.dll").VersionInfo

When you install Workflow Manager CU 1 you also have to install Service Bus CU1. Also make sure you patch the Workflow Manager client on SharePoint servers that are not running the Workflow Manager service. See more details on how to patch Workflow Manager on Andrew Connell's blog.

Build Number	Build Name	Information Link	Download Link
1.0.20922.0 (2.0.20922.0)	RTM - Service Bus 1.0 and Workflow Manager 1.0	TechNet article	Installation (Offline)
1.0.30207.2 (2.0.30207.2)	CU 1 - Service Bus 1.0	KB2799752	Download
1.0.30207.2 (2.0.30207.2)	CU 1 - Workflow Manager 1.0	KB2799754	Download
1.0.40131.0 (2.1.30904.0)​	CU 2 - Workflow Manager 1.0	KB2902007	Download
​1.0.51113.2 (2.1.40512.2)	​CU 3 - Workflow Manager 1.0	​KB3104066	​Download​

AppFabric (Distributed Cache)

​It's okay to patch AppFabric.

Date	Build Name​​	Information Link	Download Link​​
​3/27/2012	CU 1​	​KB2671763	​Download
6/27/2012	​​CU 2 (1.1.2116.2)	​KB2716015	​​Download
​12/12/2012	CU 3​ (1.1.2118.2)	​KB2787717	​​Download
4/12/2013	​​CU 4 (1.1.2124.2)	​KB2800726	​​Download
3/25/2014	​CU 5​	KB2932678	​​Download
​4/21/2015	CU 6​	​KB3042099	​​Download
11/10/2015	​​CU 7	​KB3092423	​​Download