---
layout: error-code
title: '5100'
ename: SSL - LetsEncrypt Challenge Pending
---

## The Issue
LetsEncrypt has yet to challenge the SSL/TLS validity and the timeout set by Nanobox has been reached.

## Steps to Take

### Cancel the Sequence
While Nanobox will continue to hit the LetsEncrypt API, there's a change the domain status will not change. The best thing to do is to cancel the process. To cancel a process, click the "Cancel" button in the upper-right corner of the process viewer.

![Cancel a Process](process-cancel.png)

### Try it Again
Try to create the LetsEncrypt bundle again. LetsEncrypt may issue the challenge immediately.
