# Connection Problems between Nextcloud Server and Collabora

**URL:** https://forum.collaboraonline.com/t/connection-problems-between-nextcloud-server-and-collabora/1215
**Category:** Installation & Configuration
**Created:** [June 30, 2022, 1:43pm UTC](https://forum.collaboraonline.com/t/connection-problems-between-nextcloud-server-and-collabora/1215 "2022-06-30T13:43:03Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![taubenheim-akquinet](https://avatars.discourse-cdn.com/v4/letter/t/8e8cbc/32.png) [@taubenheim-akquinet](https://forum.collaboraonline.com/u/taubenheim-akquinet)
#### Post date: [June 30, 2022, 1:43pm UTC](https://forum.collaboraonline.com/t/connection-problems-between-nextcloud-server-and-collabora/1215/1 "2022-06-30T13:43:03Z")

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Hello guys,

I currently have a problem with the connection of Nextcloud (version 24) and collabora. The Nextcloud and the Collabora (version 21.11.5.3) runs without problems. When I try to establish a connection from the nextcloud Server to the Collabora Server, I get the error message "Could not establish connection to the Collabora Online server. The Collabora Server ist installed as a Linux Package on an Alma Linux 8. I have also already tried to set up the Collabora Code Server via Docker or Podman. However, this resulted in the same effect.  
I have already used the search function in the forum, but the help there unfortunately couldn’t solve the problem. Attached is the config of the reverse proxy for the Collabora server

 ![collabora_conf](https://europe1.discourse-cdn.com/flex013/uploads/collaboraonline/original/1X/e967595722c7e26cb1aa24a490babe39bf86f1c2.png)

I hope you can help me with this problem.

Regards,

Patrick

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### Author: ![pedro.silva](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/pedro.silva/32/4_2.png) [@pedro.silva](https://forum.collaboraonline.com/u/pedro.silva)
#### Post date: [July 4, 2022, 8:07am UTC](https://forum.collaboraonline.com/t/connection-problems-between-nextcloud-server-and-collabora/1215/2 "2022-07-04T08:07:18Z")

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Hi @taubenheim-akquinet and welcome to the forum!  
I have checked and it seems you are following correctly the [Proxy settings — SDK https://sdk.collaboraonline.com/ documentation](https://sdk.collaboraonline.com/docs/installation/Proxy_settings.html#reverse-proxy-with-apache-2-webserver) 🤔

Can you provide log messages?

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### Author: ![taubenheim-akquinet](https://avatars.discourse-cdn.com/v4/letter/t/8e8cbc/32.png) [@taubenheim-akquinet](https://forum.collaboraonline.com/u/taubenheim-akquinet)
#### Post date: [July 14, 2022, 2:16pm UTC](https://forum.collaboraonline.com/t/connection-problems-between-nextcloud-server-and-collabora/1215/3 "2022-07-14T14:16:16Z")

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Hello,

unfortunately I don’t get any information from the log messages. There is nothing in the logs regarding the connection. Neither in the logs from httd nor in those from Collabora.

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### Author: ![elhananjair](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/elhananjair/32/452_2.png) [@elhananjair](https://forum.collaboraonline.com/u/elhananjair)
#### Post date: [August 24, 2022, 11:38am UTC](https://forum.collaboraonline.com/t/connection-problems-between-nextcloud-server-and-collabora/1215/4 "2022-08-24T11:38:27Z")

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@taubenheim-akquinet sometimes the problem might be caused by DNS or other network-based misconfiguration, or might be with the web server you’re using.  
I am telling you that because I have experienced such problems before and it wasn’t a problem nextcloud or collabora online server but instead my DNS configs.

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### Author: ![wwe](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/wwe/32/534_2.png) [@wwe](https://forum.collaboraonline.com/u/wwe)
#### Post date: [August 25, 2022, 7:41pm UTC](https://forum.collaboraonline.com/t/connection-problems-between-nextcloud-server-and-collabora/1215/5 "2022-08-25T19:41:32Z")

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Please check the Nextcloud Collabora troubleshooting guide:

[https://docs.nextcloud.com/server/latest/admin\_manual/office/troubleshooting.html](https://docs.nextcloud.com/server/latest/admin_manual/office/troubleshooting.html)