Whmcs_v861.zip -

: Correcting issues related to the transition to PHP 8.1 and refining mail service integrations.

: Fixed an issue where the "Change Approver Email" action was not working correctly for addon SSL certificates in the client area. Security Warning

: Fixed errors during the configuration of Google SMTP providers and corrected display values when toggling between legacy and OAuth methods for department mail. whmcs_v861.zip

: Corrected a payment recording issue for non-decimal currencies to prevent incorrect fractional credits.

: Resolved multiple "Fatal Error" issues occurring in PHP 8.1 environments, specifically during server syncs, invoice generation with 100% discounts, and when certain suspension parameters were undefined. : Correcting issues related to the transition to PHP 8

Because version 8.6.1 is EOL, it is vulnerable to several newer security threats, including those addressed in the security update which targeted XSS and CSRF vulnerabilities.

8.6 Change Log - WHMCS - Documentation

The 8.6.1 update addressed several specific bugs across the system: