Whmcs_v861.zip -

The 8.6.1 update addressed several specific bugs across the system:

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. whmcs_v861.zip

: 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. Official WHMCS files should only be downloaded directly

8.6 Change Log - WHMCS - Documentation

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. It is no longer supported and does not

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

: This version reached End-of-Life (EOL) on October 31, 2023 . It is no longer supported and does not receive security patches. Changelog & Technical Improvements