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[GH-ISSUE #2392] Letsencrypt disappearing from .conf files. / Secure Connection Failed randomly. #1686

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opened 2026-02-26 07:32:02 +03:00 by kerem · 2 comments

kerem commented

2026-02-26 07:32:02 +03:00

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Originally created by @outerregion on GitHub (Nov 11, 2022).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/2392

Checklist

Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image?
- Yes
Are you sure you're not using someone else's docker image?
- Yes
Have you searched for similar issues (both open and closed)?
- Yes

Describe the bug

The letsencrypt SSL information is being removed from the .conf file. It appears that this is happening when the check for updated certs is happening.

Nginx Proxy Manager Version

v2.9.19

To Reproduce
Steps to reproduce the behavior:
For my setup.

Create a wildcard SSL through cloudflaredns for 3 domains.
Create access list
Create proxyhost
Assign SSL and Access. Block exploits and allow websockets.
Repeat steps 3 and 4 until done.
In my case, I have 32 .conf files.

Expected behavior

Proxyhost should load and assign the SSL to that domain.

Screenshots

Operating System

Server: ubuntu server 22.04 on a proxmox host.

Additional context

Was experiencing this on the previous version. Problem seems to only appear after a set number of proxy hosts are created. I've attached a conf file, before (1.conf.bak) and after hitting save again (1.conf). If it happened once, It could be ok, but this is happening randomly on different proxy hosts. I have substituted the domain names in the uploaded files for privacy.
1.conf.bak.txt
1.conf.txt

Originally created by @outerregion on GitHub (Nov 11, 2022). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/2392  **Checklist** - Have you pulled and found the error with `jc21/nginx-proxy-manager:latest` docker image? - Yes - Are you sure you're not using someone else's docker image? - Yes - Have you searched for similar issues (both open and closed)? - Yes **Describe the bug**  The letsencrypt SSL information is being removed from the .conf file. It appears that this is happening when the check for updated certs is happening. **Nginx Proxy Manager Version**  v2.9.19 **To Reproduce** Steps to reproduce the behavior: For my setup. 1. Create a wildcard SSL through cloudflaredns for 3 domains. 2. Create access list 3. Create proxyhost 4. Assign SSL and Access. Block exploits and allow websockets. 5. Repeat steps 3 and 4 until done. In my case, I have 32 .conf files. **Expected behavior**  Proxyhost should load and assign the SSL to that domain. **Screenshots**  **Operating System**  Server: ubuntu server 22.04 on a proxmox host. **Additional context**  Was experiencing this on the previous version. Problem seems to only appear after a set number of proxy hosts are created. I've attached a conf file, before (1.conf.bak) and after hitting save again (1.conf). If it happened once, It could be ok, but this is happening randomly on different proxy hosts. I have substituted the domain names in the uploaded files for privacy. [1.conf.bak.txt](https://github.com/NginxProxyManager/nginx-proxy-manager/files/9993572/1.conf.bak.txt) [1.conf.txt](https://github.com/NginxProxyManager/nginx-proxy-manager/files/9993573/1.conf.txt)

kerem

2026-02-26 07:32:02 +03:00

closed this issue
added the
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kerem commented

2026-02-26 07:32:03 +03:00

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@qbiecom commented on GitHub (Nov 12, 2022):

Could this be the same issue as #2254?

@qbiecom commented on GitHub (Nov 12, 2022): Could this be the same issue as #2254?

kerem commented

2026-02-26 07:32:03 +03:00

Author

Owner

@outerregion commented on GitHub (Nov 12, 2022):

Yup, this is a duplicate of #2254. I have implemented a brute force work around for now, but it's not really sustainable.

For posterity, the workaround is setting up a cron to backup up only files that have letsencrypt.

*/5 * * * * rsync -az /root/npm/ /root/docker/nginx-proxy-manager/data/nginx/proxy_host/ >/dev/null 2>&1
1-59/2 * * * * find . -type f -exec grep -lr "letsencrypt-acme-challenge" {} ; -exec cp -r {} /root/npm/ ; >/dev/null 2>&1

@outerregion commented on GitHub (Nov 12, 2022): Yup, this is a duplicate of #2254. I have implemented a brute force work around for now, but it's not really sustainable. For posterity, the workaround is setting up a cron to backup up only files that have letsencrypt. */5 * * * * rsync -az /root/npm/ /root/docker/nginx-proxy-manager/data/nginx/proxy_host/ >/dev/null 2>&1 1-59/2 * * * * find . -type f -exec grep -lr "letsencrypt-acme-challenge" {} ; -exec cp -r {} /root/npm/ ; >/dev/null 2>&1

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starred/nginx-proxy-manager-NginxProxyManager#1686

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