Cobra Forum

Question: Website is not accessible: Increasing max input vars limit needed


Applicable to:

• Plesk for Linux
• Plesk for Windows

Symptoms

The website is not accessible. The following error is shown in the browser screen:

PHP Max Input Vars: [?] 1000 - Recommended Value: 3000. Max input vars limitation truncate POST data such as menus. Increasing max input vars limit needed.

Cause

Default value for max_input_vars directive is insufficient.


Resolution

1.Log into Plesk.

2.Increase max_input_vars parameter in Domains > example.com > PHP Settings > Additional configuration directives:

(https://pix.cobrasoft.org/images/2026/01/21/border_plus_Screenshot_6__1_.png)

NOTE: If there is no Additional configuration directives in PHP settings, contact your system administrator.