if AUTHENTIK_USER_PREFIX is changed, the redirect URI policy also needs to be changed #106

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opened 2026-08-10 14:18:58 +00:00 by amras · 3 comments

amras commented 2026-08-10 14:18:58 +00:00

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Ran into an issue:

with AUTHENTIK_USER_PREFIX=foo

When I navigate to https://nextcloud.example.com

I get redirected to authentik.example.com, with the redirect_uri set to nextcloud.example.com/apps/sociallogin/custom_oidc/foo

And see the error message:

The request fails due to a missing, invalid, or mismatching redirection URI (redirect_uri).

To fix this, I need to go into my authentik admin panel, navigate to Applications > Providers, find the Nextcloud provider, click Edit and change the redirect URI from .../authentik to .../foo. It took me some time to figure this out.

---

My suggestion would be to remove AUTHENTIK_USER_PREFIX from the .env file, or provide a warning that it should usually not be changed.

Ran into an issue: with `AUTHENTIK_USER_PREFIX=foo` When I navigate to https://nextcloud.example.com I get redirected to authentik.example.com, with the redirect_uri set to `nextcloud.example.com/apps/sociallogin/custom_oidc/foo` And see the error message: ``` The request fails due to a missing, invalid, or mismatching redirection URI (redirect_uri). ``` To fix this, I need to go into my authentik admin panel, navigate to Applications > Providers, find the Nextcloud provider, click Edit and change the redirect URI from `.../authentik` to `.../foo`. It took me some time to figure this out. --- My suggestion would be to remove AUTHENTIK_USER_PREFIX from the .env file, or provide a warning that it should usually not be changed.

amras added the documentation label 2026-08-10 14:18:58 +00:00

ineiti commented 2026-08-11 04:36:44 +00:00

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I propose the warning in the .env file - specifically because I don't know how it got there :)

I propose the warning in the `.env` file - specifically because I don't know how it got there :)

simon commented 2026-09-02 09:54:56 +00:00

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I think we have old instances with a different user prefix that we still need to migrate. So the .env needs to stay there for a bit, but I agree on having a warning there.

Correct me if I'm wrong @moritz

I think we have old instances with a different user prefix that we still need to migrate. So the .env needs to stay there for a bit, but I agree on having a warning there. Correct me if I'm wrong @moritz

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amras referenced this issue from a commit 2026-09-23 11:19:39 +00:00

[doc] warning for AUTHENTIK_USER_PREFIX

amras referenced this issue 2026-09-23 11:21:13 +00:00

warn about AUTHENTIK_USER_PREFIX #136

amras commented 2026-09-23 11:21:54 +00:00

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Should be resolved by PR 136

Should be resolved by [PR 136](https://git.coopcloud.tech/coop-cloud/nextcloud/pulls/136)

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dannygroenewegen referenced this issue from a commit 2026-09-25 09:22:24 +00:00

[doc] warning for AUTHENTIK_USER_PREFIX

dannygroenewegen closed this issue 2026-09-25 09:22:32 +00:00

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Reference: coop-cloud/nextcloud#106