# Failed authorization procedure
**URL:** https://community.letsencrypt.org/t/failed-authorization-procedure/169029
**Category:** Help
**Created:** [January 5, 2022, 8:06am UTC](https://community.letsencrypt.org/t/failed-authorization-procedure/169029 "2022-01-05T08:06:44Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@upup007](https://community.letsencrypt.org/u/upup007)
#### Post date: [January 5, 2022, 8:06am UTC](https://community.letsencrypt.org/t/failed-authorization-procedure/169029/1 "2022-01-05T08:06:44Z")
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for [www.thaiaccorp.com](http://www.thaiaccorp.com)
Enabled Apache rewrite module
Waiting for verification...
Cleaning up challenges
Failed authorization procedure. [www.thaiaccorp.com](http://www.thaiaccorp.com) (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching [http://www.thaiaccorp.com/.well-known/acme-challenge/ARdGMphPVCmwOoxugO-GjgcItjpNBm0k1hgFKwtsDnA:](http://www.thaiaccorp.com/.well-known/acme-challenge/ARdGMphPVCmwOoxugO-GjgcItjpNBm0k1hgFKwtsDnA:) Timeout during connect (likely firewall problem)
IMPORTANT NOTES:
- The following errors were reported by the server:
---
### Author:  [@jillian](https://community.letsencrypt.org/u/jillian)
#### Post date: [January 5, 2022, 3:23pm UTC](https://community.letsencrypt.org/t/failed-authorization-procedure/169029/2 "2022-01-05T15:23:17Z")
> [@upup007](#):
>
> urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching [http://www.thaiaccorp.com/.well-known/acme-challenge/ARdGMphPVCmwOoxugO-GjgcItjpNBm0k1hgFKwtsDnA:](http://www.thaiaccorp.com/.well-known/acme-challenge/ARdGMphPVCmwOoxugO-GjgcItjpNBm0k1hgFKwtsDnA:) Timeout during connect (likely firewall problem)
This error message is returned by Let's Encrypt when they cannot connect to your site to perform validation. You should first check that your firewall is allowing connections on port 80 and then check that your server is up and able to respond on port 80.
Please provide the command you ran that produced this error
---
### Author:  [@system](https://community.letsencrypt.org/u/system)
#### Post date: [February 4, 2022, 3:23pm UTC](https://community.letsencrypt.org/t/failed-authorization-procedure/169029/3 "2022-02-04T15:23:40Z")
This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.