Problem binding to port 443: Could not bind to IPv4 or IPv6 (

Server
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/opt/eff.org/certbot/venv/lib/python2.6/site-packages/cryptography/init.py:26: DeprecationWarning: Python 2.6 is no longer supported by the Python core team, please upgrade your Python. A future version of cryptography will drop support for Python 2.6
DeprecationWarning
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Obtaining a new certificate
/opt/eff.org/certbot/venv/lib/python2.6/site-packages/acme/jose/jwa.py:110: DeprecationWarning: signer and verifier have been deprecated. Please use sign and verify instead.
signer = key.signer(self.padding, self.hash)
Performing the following challenges:
tls-sni-01 challenge for ABC.com
tls-sni-01 challenge for www.ABC.com
Cleaning up challenges
Problem binding to port 443: Could not bind to IPv4 or IPv6.

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PLEASE HELP ON THIS MATTER I HAVE ROOT ACCESS OF MY MACHINE .lOOKING FORWARED GOOD RESPONSE. WEBSITE IS WORKING FROM cPANEL

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Do you have webserver software already running?

You can check that with:

netstat -tln

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tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN

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Sorry, one parameter was missing:

netstat -tpln

The argument -p shows the program name which is listening.

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tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 13807/httpd

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There is already some software (Apache most likely) listening on port 443. You cannot use the standalone authentication then.

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so now what do ?? in oder to get out from this and renew my ssl certifcate

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A short term fix: You can briefly stop Apache and run Certbot again in standalone mode to renew your certificate.

A better, long term fix: Switch to using the webroot method in Certbot: https://certbot.eff.org/docs/using.html#webroot. This will let Certbot renew your certificates without taking down Apache.

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