Nginx fails to start on a Plesk server: 99: Cannot assign requested address

Daniel Yordanov

Updated June 09, 2025 15:16

Plesk for Linux kb: technical

Applicable to:

When opening a website in a web browser, either Webserver Default page or the following error is shown:

PLESK_INFO: Unable to connect
The following error message is shown on the Home page in Plesk:

PLESK_ERROR: New configuration files for the Apache web server were not created due to the errors in configuration templates: nginx: [emerg] bind() to 203.0.113.2:443 failed (99: Cannot assign requested address) nginx: configuration file /etc/nginx/nginx.conf test failed.
nginx fails to start with the following error:

CONFIG_TEXT: nginx: [emerg] bind() to 203.0.113.2:443 failed (99: Cannot assign requested address)
Execution of plesk repair web command finishes with a warning:

# plesk repair web
...
One or more IP addresses registered in Plesk (203.0.113.2) are missing from the server's network interfaces. Domains assigned these IP addresses (example.com) are unreachable. Assign valid IP addresses to these domains and rebuild the server configuration files........................... [WARNING]
The IP addressfrom the warning message (203.0.113.2 in this example) is marked as broken in Plesk at Tools & Settings > IP Addresses.
This IP address does not exist on the system in Plesk: the following command does not list it:

# ip a | grep '203.0.113.2'

The IP address that exists in Plesk does not exist on the server.

Apply one of the following solutions:

Add the missing IP address 203.0.113.2 to the server

2. Go to Tools & Settings > IP Addresses

3. Press Repair next to the broken (usually old) IP address

If the address is no longer used, remove it from Plesk

Switch the domains from the missing IP address to the new one using the instructions from this KB article (section "Changing the IP address for all domains assigned to a specific IP address").
Log into Plesk
Go to Tools & Settings > IP Addresses and click Reread.
Select the broken IP address and click Remove.
Connect to the Plesk server via SSH.
Repair the web server configuration by executing this command:

# plesk repair web -y

2 comments

Pedro Fernandez May 20, 2024 23:31

GRACIAS

1
Tarek Maaraba June 09, 2025 15:16

The suggested solution doesn't apply or work in the manner stated. When the IP address is added, it doesn't fix the Apache Webserver Configuration files. And when I fix the Config file, the IP address breaks again.

0

Please sign in to leave a comment.

Have more questions? Submit a request