While configuring cumulative updates for SharePoint 2013 on App and WFE Servers can we install CU on both App and WFE servers simultaneously? Or we should complete the installation on App Server first and then move to the Web server?
I'm already done with the March Update and first installed the update on App Server then did the same on Web Server. PSConfig executed successfully and now I am going to install October CU. However, in order to save time can we configure CU on both at the same time. Will it cause any issues or problems?
What would be the safe and correct approach?