Support intro
Sorry to hear you’re facing problems. 
The community help forum (help.nextcloud.com) is for home and non-enterprise users. Support is provided by other community members on a best effort / “as available” basis. All of those responding are volunteering their time to help you.
If you’re using Nextcloud in a business/critical setting, paid and SLA-based support services can be accessed via portal.nextcloud.com where Nextcloud engineers can help ensure your business keeps running smoothly.
Getting help
In order to help you as efficiently (and quickly!) as possible, please fill in as much of the below requested information as you can.
Before clicking submit: Please check if your query is already addressed via the following resources:
- Official documentation (searchable and regularly updated)
- How to topics and FAQs
- Forum search
(Utilizing these existing resources is typically faster. It also helps reduce the load on our generous volunteers while elevating the signal to noise ratio of the forums otherwise arising from the same queries being posted repeatedly).
The Basics
- Nextcloud Server version (e.g., 29.x.x):
33.0.0
- Operating system and version (e.g., Ubuntu 24.04):
Debian 13 Trixie
- Web server and version (e.g, Apache 2.4.25):
NA
- Reverse proxy and version _(e.g. nginx 1.27.2)
Nginx Proxy Manager2.14
- PHP version (e.g, 8.3):
NA
- Is this the first time you’ve seen this error? (Yes / No):
Yes
- When did this problem seem to first start?
From the beginning
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
Docker
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
Yes
Summary of the issue you are facing:
I cant figure out how or where to configure the HTTP headers. Its not really an error per say, I just didnt find a good source explaining what to do in case you are using NPM.
As stated above I’m using NPM as a reverse proxy so the guides I found for NGINX are not applicable if I understand things correctly. Both Nextcloud and NPM is running in Docker.
I tried to add Custom nginx configuration but it didnt work. The whiteboard section works so I suspect this is the place where I can add the header config, but not sure how or what I’m missing.
If I enable the top section the dashboard doesnt load with and gives ERR_HTTP2_PROTOCOL_ERROR
Any pointers would be appreciated.