# Collabora CODE not working with some users? **URL:** \ **Category:** Installation & Configuration\ **Created:** [April 25, 2025, 9:27am UTC](https://forum.collaboraonline.com/t/collabora-code-not-working-with-some-users/3628 "2025-04-25T09:27:41Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![vincen](https://avatars.discourse-cdn.com/v4/letter/v/3bc359/32.png) [@vincen](https://forum.collaboraonline.com/u/vincen)\ **Post date:** [April 25, 2025, 9:27am UTC](https://forum.collaboraonline.com/t/collabora-code-not-working-with-some-users/3628/1 "2025-04-25T09:27:41Z")
Hi I have a strange problem with Collabora Code (version 24.04.13.3-1) but problem looks to have started a little while ago. Code is installed using Debian packages on a debian 12 system. Reverse proxy is done with Apache with a proper SSL certificate. Nextcloud (version 30 or 31) is configured to use it and in Admin settings of Nextcloud it states everything is good. ![Screenshot_20250425_112627](https://europe1.discourse-cdn.com/flex013/uploads/collaboraonline/original/2X/0/08b37c9263d3cf48aade0e3e5b8cacc04db2e307.png) It’s used by multiple NC instances on that server (shared hosting server). Server is in a datacenter. When I try to open some documents in these Nextcloud I have no problem using either Firefox or Chromium. Some users are unable to open documents due to a proxy error: ![image_2025-04-25_09-51-11 (3)](https://europe1.discourse-cdn.com/flex013/uploads/collaboraonline/original/2X/7/724a2b142443dc9c36726c1f97f5f5aaa82567dd.png) How it can affect only some users and not all of them ? Update: i have found a way to mitigate the issue adding: `connectiontimeout=60 timeout=60` at `ProxyPass` directive but it’s far from perfect and still not working for some users ☹ Thanks for help, Vincèn ---
**Author:** ![darshan](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/darshan/32/2230_2.png) [@darshan](https://forum.collaboraonline.com/u/darshan)\ **Post date:** [April 25, 2025, 1:41pm UTC](https://forum.collaboraonline.com/t/collabora-code-not-working-with-some-users/3628/2 "2025-04-25T13:41:40Z")
Hi @vincen, ### Possible Causes 1. **User networks** – Firewalls, proxies, or slow connections on the client side might break WebSocket or long-lived HTTP connections. 2. **Apache config** – Double-check these are set: ```apache ProxyPass /lool/ws wss://127.0.0.1:9980/lool/ws retry=0 ProxyPassReverse /lool/ws wss://127.0.0.1:9980/lool/ws ProxyPass / http://127.0.0.1:9980/ timeout=60 keepalive=On retry=0 ProxyPassReverse / http://127.0.0.1:9980/ ``` Make sure `proxy_wstunnel`, `proxy_http`, and `headers` modules are enabled. 1. **Connection limits** – Check Apache’s `MaxClients`, `ServerLimit`, and system limits (like `ulimit` or `/proc/sys/net/core/somaxconn`). 2. **IPv6 issues** – Some users might hit IPv6 problems. Test with IPv6 off. 3. **Browser problems** – Extensions, caching, or browser bugs. Ask affected users to try incognito or another browser. 4. **Logs** – Check CODE logs (`/var/log/coolwsd.log`) and Apache logs when it fails. ### Suggestions - Raise `timeout`, `ProxyTimeout`, and enable `keepalive`. - Compare logs for users where it fails vs works. - Get dev console output from affected users (network tab, any 502s?). Thanks Darshan ---
**Author:** ![vincen](https://avatars.discourse-cdn.com/v4/letter/v/3bc359/32.png) [@vincen](https://forum.collaboraonline.com/u/vincen)\ **Post date:** [April 26, 2025, 8:56am UTC](https://forum.collaboraonline.com/t/collabora-code-not-working-with-some-users/3628/3 "2025-04-26T08:56:51Z")
Hi @darshan Thanks a lot for your message and stuffs to check. I have checked all points you list, made some modifications in config of my proxy-reverse as you suggested but still the same. I have checked in apache logs and I don’t see any differences between my requests to open a document and some of other users excepted that mine succeeds and some others fail with a 401 error code. For CODE logs it doesn’t log at all. It’s well configured to log in /var/log/coolwsd.log but the file doesn’t exist in my system. Something else I can check ? and still don’t understand why it works randomly depending of users ☹ Vincèn ---
**Author:** ![darshan](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/darshan/32/2230_2.png) [@darshan](https://forum.collaboraonline.com/u/darshan)\ **Post date:** [April 30, 2025, 9:15am UTC](https://forum.collaboraonline.com/t/collabora-code-not-working-with-some-users/3628/4 "2025-04-30T09:15:09Z")
Hello @vincen Can you please go through below points and give me some insights so it will better to solve the issue here… #### 1 **Browser Console Logs and Dev Tools** : Ask affected users to open Dev Tools (F12 → Network tab), reload the failing document, and check: - Does the WebSocket connection (`/lool/ws`) succeed or fail? - Do they see CORS or TLS errors? It will help narrow whether it’s a **client issue** or a **server-side Apache timeout/drop**. * * * #### 2. **Check for Intermediate Firewalls / Shared Hosting Restrictions** : Since it’s shared hosting in a datacenter: - Are there limits or DPI firewalls (deep packet inspection) that might interfere with WebSocket traffic? - Are idle or long-lived connections being killed? You may try: - Setting `KeepAlive On` and `MaxKeepAliveRequests 1000` in Apache. - Increasing `KeepAliveTimeout 120`. * * * #### 3. **Client-Side Network Issues** : Some users may be behind corporate proxies or ISPs that block or degrade WebSocket connections. Ask them to try: - Different browsers (some proxies behave differently with Firefox vs Chrome). - Mobile tethering (to test if their home/corporate network is the culprit) Thanks Darshan ---
**Author:** ![darshan](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/darshan/32/2230_2.png) [@darshan](https://forum.collaboraonline.com/u/darshan)\ **Post date:** [May 12, 2025, 10:18am UTC](https://forum.collaboraonline.com/t/collabora-code-not-working-with-some-users/3628/5 "2025-05-12T10:18:42Z")