# Collabora office fails in one Nextcloud instance but works on another

**URL:** <https://help.nextcloud.com/t/collabora-office-fails-in-one-nextcloud-instance-but-works-on-another/228610>\
**Category:** 📄 Office\
**Tags:** wopi, nc31, collabora-built-in, setup\_warning\
**Created:** [July 13, 2025, 4:12pm UTC](https://help.nextcloud.com/t/collabora-office-fails-in-one-nextcloud-instance-but-works-on-another/228610 "2025-07-13T16:12:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![scubamuc](https://help.nextcloud.com/user_avatar/help.nextcloud.com/scubamuc/32/63165_2.png) [@scubamuc](https://help.nextcloud.com/u/scubamuc)\
**Post date:** [July 13, 2025, 4:37pm UTC](https://help.nextcloud.com/t/collabora-office-fails-in-one-nextcloud-instance-but-works-on-another/228610/2 "2025-07-13T16:37:08Z")

</div>

Hey @jsmtux welcome to the community 👋

> [@jsmtux](#):
>
> ```auto
> - aliasgroup1=https://www.instanceA.com:443,https://www\\.instanceA\\.com:443
> - aliasgroup2=https://[aparrala.amarinha.gal](http://nextcloud.web.com):443,https://nextcloud\\.web\\.com:443
> 
> ```

that doesn’t look right… please double check you syntax, see

> [@Collabora CODE for Nextcloud with Docker](https://help.nextcloud.com/t/install-configure-collabora-code-on-nextcloud-with-docker/216725#p-651175-collabora-code-docker-options-multiple-permitted-client-domains-4):
>
> Install & configure Collabora CODE for Nextcloud with Docker [Collabora integration guide](https://help.nextcloud.com/t/collabora-integration-guide/151879)[Collabora Online](https://www.collaboraonline.com) is a LibreOffice-based online office suite with collaborative editing, which supports all major documents, spreadsheet and presentation file formats and works together with all modern browsers. The [Nextcloud Office](https://apps.nextcloud.com/apps/richdocuments) integration app provides an interface for editing documents in Nextcloud with Collabora Online. [Collabora CODE](https://www.collaboraonline.com/code/) (Collabora Office Development Edition) is the development version…

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