A website is inaccessible when ModSecurity is enabled: Failed deleting collection (name "ip", key "xxxxx"): Internal error

Log in to Plesk

Go to Tools & Settings > Web Application Firewall (ModSecurity) > Settings tab

Under Custom directives, add the directive SecCollectionTimeout 600 (default is 3600), then click Apply to save the settings:

Go to the General tab in the Web Application Firewall.

Under the option Web application firewall mode select Off, then click Apply to save the settings

Connect to the server via SSH

Run the following command to clear the ip.pag file:

# echo "" > /var/cache/modsecurity/www-data-ip.pag

In Plesk, under the option Web application firewall mode select On, then click Ok to apply the settings

Log in to Plesk

Go to Tools & Settings > Web Application Firewall (ModSecurity) > Settings tab

Under Custom directives, add the directive SecCollectionTimeout 600 (default is 3600), then click Apply to save the settings:

Go to the General tab in the Web Application Firewall.

Under the option Web application firewall mode select Off, then click Apply to save the settings

Connect to the server via RDP

Open CMD as administrator

Run the command below to find the GUID of the affected domain:

C:\> plesk db "select guid from domains where name like '%example.com%'"
+--------------------------------------+
| guid |
+--------------------------------------+
| B51D0987-DEC1-415C-8941-6BB5A49D5E7E |
+--------------------------------------+

Open Windows Explorer and navigate to the folder C:\Program Files (x86)\Plesk\ModSecurity\vhosts\<GUID>\temp

Empty the file IWPD_3(examplecom)-ip.pag

In Plesk in the General tab in the Web Application Firewall, select On, then click Apply to save the settings