Installation method (e.g. AIO, NCP, Bare Metal/Archive, etc.)
AIO
Are you using Cloudflare, mod_security, or similar? (Yes / No)
No
Summary of the issue you are facing:
Hello dear community.
I am installing Nextcloud for the first time using AIO container. I don’t change any options, just install default selection including Collabora and Imaginary.
The Nextcloud seems to work fine, but I can’t open any document or pdf file, and can not create a new document.
I run reverse proxy, and I will also include nginx config and logs.
I see a lot of errors both in nginx and Nextcloud logs, which I can’t understand.
I go through those steps, and observe the following: when I input 0.0.0.0/0 into Allow list for WOPI requests and click the arrow, all control elements on that page get grayed out. If I switch to other settings tab and then return to Office, I can see no 0.0.0.0/0 in the list.
The cURL output from inside the container:
I have solved the issue. It was the problem in connectivity between reverse proxy and nextcloud server. They are connected using Wireguard, and WG has set default MTU of 1420 on one side and 8920 on another.
I have explicitly set MTU to 1200, which I consider “safe”, and now Nextcloud is able to open every file, and the Nextcloud Hub is now much faster.
It is really strange that before Nextcloud everything seemed to work fine.