Step by Step installation of Cumulative Update on SharePoint Farm.

This post will guide you with steps on how to install cumulative update on your SharePoint Farm.

Assume you have 4 servers in your farm. 2 APP and 2 Web front end.
APP1 is hosting your central admin. Also take a note of current SharePoint build number from
Manage Server on farm under system settings.

So lets get started with steps:-

1. Download your latest Cumulative Update or the update you want to install from Microsoft official site.

2. Once downloaded, copy paste it across all servers in farm.

Note: Sometimes we also have file with .cab extension so make sure you keep application file(.exe) and .cab file in same folder.

3. We always start with the server that host Central Administration in our case it was APP1. So we run the exe file on app1.

4. After installing it on APP1. Then we go ahead with APP2, after that WFE 2 and lastly WFE1.

5. Once installation of Cumulative update done on all servers. Go to APP1 server and Run SharePoint Configuration Wizard.

6. You should run it in same way you installed Cumulative update.

7. After successful completion of SharePoint Config wizard. Go to Manage Server on farm under system settings. It will have the new build value.

Hope it helps:)

Happy SharePointing :)