Troubleshooting Authentication

If you encounter errors or issues while authenticating with WHMCS, see the sections below to start troubleshooting and resolve the issue.

For more information about authenticating, see Authentication.

Authenticating with WHMCS

You may encounter the following common issues:

Error or IssueExplanationNext Steps
A user or admin reports frequent logouts.This issue may be due to PHP misconfiguration, proxy or CDN misconfiguration, or issues with the visitor’s IP address.Frequent Logouts
CloudFlare® Proxy Check Errors
When you attempt to log in, the system redirects you back to the login page without an error.
or
Invalid csrf protection token
This indicates an issue with PHP sessions on your server.Login Redirect Loops
License InvalidYou entered an invalid license key or moved the WHMCS installation without updating the license.Invalid License Errors
Login Details Incorrect. Please try again.The WHMCS System URL setting does not match the URL that the user attempted to use to log in.Login Details Errors
Oops! Access Denied - ForbiddenEither the admin’s administrator role is missing the required permissions or an account owner has not set a password.Access Denied Forbidden Errors
The reset link you have followed is invalid. Please try again.The WHMCS System URL setting does not match the URL that the user attempted to use to access the password reset page.Invalid Reset Link Errors

Last modified: May 28, 2024