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# Error - Could not bind TCP port 80 because it is already in use by another process on this system (such as a web server)
- URL: https://snubmonkey.com/error-could-not-bind-tcp-port-80/
- Published: 2023-11-23T14:47:21.000Z
- Updated: 2025-04-16T22:30:23.000Z
- Description: This is the fourteenth in a series of posts featuring Protips, tips, tricks, hacks, and secrets provided by Our Team 🙊 — We want to share our top tips for the growing and thriving Linux community out there. Because sometimes you need a little help...
- Author: yannick Coffi
- Tags: tips

Let's Encrypt is a terrific new free service that allows users to obtain a free SSL certificate to secure their website. Those free certificates only last a few months and must be updated on a regular basis.

  
You might be running into this error about not being able to renew Let's Encrypt certificates after issuing this command below.

```
sudo certbot renew -d your.website.com

```

OUTPUT:

```
Failed to renew certificate your.website.com with error:
Could not bind TCP port 80 because it is already in use by
another process on this system (such as a web server). 
Please stop the program in question and then try again.

```
  
  
What we need to do here is `stop` and `start` all the web server applications you might have running.   
ie. Apache HTTP Server, Nginx, Lighttpd, OpenLiteSpeed... you name it.

```
$ sudo systemctl stop nginx

$ sudo systemctl restart nginx

```

then check each for their status;  
  
```
$ sudo systemctl status nginx

OUTPUT

● nginx.service - A high performance web server and a reverse 
proxy server
     Loaded: loaded (/lib/systemd/system/nginx.service; enabled; 
vendor preset: enabled)
     Active: active (running) since Wed 2023-11-22 16:24:51 UTC;
12s agoDocs: man:nginx(8)
    Process: 1291303 ExecStartPre=/usr/sbin/nginx -t -q -g daemon 
on; master_process on; (code=exited, status=0/SUCCESS)
    Process: 1291316 ExecStart=/usr/sbin/nginx -g daemon on; 
master_process on; (code=exited, status=0/SUCCESS)
   Main PID: 1291318 (nginx)
      Tasks: 7 (limit: 2100)
     Memory: 16.7M
        CPU: 614ms
     CGroup: /system.slice/nginx.service
     .....
     ....
     ..
     .

```
  
  
now run;

```
$ sudo certbot renew -d your.website.com

OUTPUT

Renewing an existing certificate
IMPORTANT NOTES:
- Congratulations! Your certificate and chain have been saved at:
 .....
 ...
 ..
 .
```

And voila!