Cobra Forum

Question: Unable to open any domain with enabled nginx on Plesk because Apache is not running

Applicable to:

• Plesk for Linux

Symptoms

• Unable to browse any domain hosted on the Plesk server. The browser displays this error:

502 Bad Gateway

• Nginx reverse proxy is enabled in Tools & Settings > Services Management.
• Nginx service is running.

Cause

Apache service is stopped on the server.

Resolution

                                                Via Plesk GUI

1.Log in to Plesk GUI

2.Go to Tools & Settings > Services Management > Apache Web Server > Start.

3.If the issue remains the same (or sites are not working with the different error message), go to Extensions > My Extensions > Webserver Configuration Troubleshooter and Rebuild All configuration files:

(https://pix.cobrasoft.org/images/2025/11/24/mceclip0-19.png)

                                            Via command-line interface

• Connect to the server via SSH

• Start Apache Web Server:

1.For CentOS based:

# service httpd start

2.For Debian based:

# service apache2 start

• If the issue remains the same (or sites are not working with the different error message), execute the following command:

# plesk repair web -y