Checking for WHMCS System Requirements
Before you can install or update WHMCS, you must ensure that your setup meets the system requirements for your chosen version of WHMCS.
For example, before you can upgrade from WHMCS 8.6 to WHMCS 8.7, you must ensure that your system meets all of the system requirements for WHMCS 8.7.
Read the release notes for new versions carefully before beginning an upgrade. Upgrading PHP versions or other dependencies in the wrong order may cause serious issues.
When you check for compliance with system requirements, make sure to consider the following questions:
- Do you have enough available disk space?
- Does the PHP
open_basedirdirective contain the entire WHMCS document root?
- Are your modules and extensions compatible according to their WHMCS Marketplace listings? You may need to contact the vendor or developer for confirmation.