Applies: SharePoint Server 2016, Project Server 2016
So, you have decided to apply Windows Server updates? Following this, it is important to remember to check if there are some pending updates for SharePoint and Project Server 2016. Sometimes there are security updates that apply to SharePoint and Project Server, which may not my not be obvious just by looking at the updates, prior to applying them.
After windows server updates are applied, it is best practice to ensure that your farm is in a healthy state. You can do this by running the SharePoint Configuration Wizard (SCW). If you have multiple Web/App Servers, Start by running this on the one that hosts the Central Admin (CA) portal.
You may encounter upgrade issue as shown in fig below.
Fig (1) – SharePoint Config Wizard Upgrade Error
If this happens, run the below CMD on each of the Web/App Servers, starting with the main server (hosting the CA)
psconfig.exe -cmd helpcollections -installall -cmd secureresources -cmd services -install -cmd installfeatures -cmd applicationcontent -install -cmd upgrade -inplace b2b -force –wait
Fig (2) – Upgrade CMD
Hopefully this will resolve your issue, as per fig (3) below.
Fig (3) – Successful Upgrade
Hope this helps.