Problem #

You see the following error while trying to activate the PayPal Payments payment gateway module:

Gateway Activation Failed

Cause #

This error often occurs because the OPcache PHP extension is enabled. OPcache can cause problems with old data caches that WHMCS cannot control. In some cases, its features can also prevent PHP scripts from running each time that WHMCS executes them. These issues can cause unexpected behavior in WHMCS.

Solution #

Deactivate the OPcache extension from your PHP configuration.

Last modified: October 25, 2024