Whmcs_v861.zip -

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

: 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. whmcs_v861.zip

: Corrected a payment recording issue for non-decimal currencies to prevent incorrect fractional credits. : Correcting issues related to the transition to PHP 8

If you have obtained this file from a third-party or "nulled" software site, it is highly likely to contain malware. Official WHMCS files should only be downloaded directly from the WHMCS Download Portal or via the in your admin panel. If you have obtained this file from a

8.6 Change Log - WHMCS - Documentation

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

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.