# LetsEncrypt Acme Challenge error

**URL:** https://discourse.roots.io/t/letsencrypt-acme-challenge-error/6295
**Category:** trellis
**Created:** 2016-03-26T01:34:59Z
**Posts:** 40
**Showing post:** 2 of 40

## Post 2 by @swalkinshaw — 2016-03-26T02:09:27Z

Unfortunately we neglected to test enabling Let’s Encrypt on an _already_ provisioned server which is the problem here I think.

We create some Nginx site configs for Let’s Encrypt “challenges”. I’m guessing these conflict with your existing WP site Nginx conf. If you want to do a little manual work and can stand a few minutes of downtime, you can remove the symlink for your WP site conf in `/etc/nginx/sites-enabled`.

Then re-run the provisioning process and it may all work.

Actually one easier you could try is swapping the order of these two roles: [https://github.com/roots/trellis/blob/76cad9dacc5f4ed84701feeef163c724658be95d/server.yml#L31-L32](https://github.com/roots/trellis/blob/76cad9dacc5f4ed84701feeef163c724658be95d/server.yml#L31-L32)

Putting `letsencrypt` last could work too.

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