[GH-ISSUE #4910] Entra ID authentication failed Unsupported 'prompt' value #9511

New Issue

saavagebueno · 2026-08-05T01:22:25-04:00

saavagebueno commented

2026-08-05 01:22:25 -04:00

Originally created by @ian-knight-acacia on GitHub (Dec 3, 2025).
Original GitHub issue: https://github.com/netbirdio/netbird/issues/4910

Users are no longer able to Authenticate via EntraID; error AADSTS90023: Unsupported 'prompt' value

EntraID does not appear to support mulitple values for the OAuth URL parameter prompt.

The 0.60.5 update adds OAuth select_account prompt support in #4880
This updates the login URI from containing ...&prompt=login&... to ...&prompt=login+select_account&... .

To Reproduce

Steps to reproduce the behavior:

On 0.60.5 with EntraID as IdP, attempt to connect a logged-out account (UI or CLI)

Using CLI netbird up --no-browser, then manually modifying the URI from ...&prompt=login+select_account&... to ...&prompt=login&... allows the user to Authenticate without issue.

Expected behavior

A standard Microsoft Entra OAuth prompt

Are you using NetBird Cloud?

Self-hosted

NetBird version

0.60.5

Is any other VPN software installed?

No

Debug output

N/A see above.

Screenshots

Additional context

The issue appears to be related to the changes in #4880 e2cb0a8

Issue not present after downgrading to 0.60.4.

Have you tried these troubleshooting steps?

Reviewed client troubleshooting (if applicable)
Checked for newer NetBird versions
Searched for similar issues on GitHub (including closed ones)
Restarted the NetBird client
Disabled other VPN software
Checked firewall settings

Originally created by @ian-knight-acacia on GitHub (Dec 3, 2025). Original GitHub issue: https://github.com/netbirdio/netbird/issues/4910 Users are no longer able to Authenticate via EntraID; error `AADSTS90023: Unsupported 'prompt' value` EntraID does not appear to support mulitple values for the OAuth URL parameter `prompt`. The 0.60.5 update adds OAuth select_account prompt support in #4880 This updates the login URI from containing `...&prompt=login&...` to `...&prompt=login+select_account&...` . **To Reproduce** Steps to reproduce the behavior: 1. On `0.60.5` with EntraID as IdP, attempt to connect a logged-out account (UI or CLI) Using CLI `netbird up --no-browser`, then manually modifying the URI from `...&prompt=login+select_account&...` to `...&prompt=login&...` allows the user to Authenticate without issue. **Expected behavior** A standard Microsoft Entra OAuth prompt **Are you using NetBird Cloud?** Self-hosted **NetBird version** `0.60.5` **Is any other VPN software installed?** No **Debug output** N/A see above. **Screenshots** <img width="653" height="673" alt="Image" src="https://github.com/user-attachments/assets/b7cd323d-2602-4a29-9725-29db412bdd57" /> **Additional context** The issue appears to be related to the changes in #4880 e2cb0a8 Issue not present after downgrading to 0.60.4. **Have you tried these troubleshooting steps?** - [x] Reviewed [client troubleshooting](https://docs.netbird.io/how-to/troubleshooting-client) (if applicable) - [x] Checked for newer NetBird versions - [x] Searched for similar issues on GitHub (including closed ones) - [x] Restarted the NetBird client - [x] Disabled other VPN software - [x] Checked firewall settings

saavagebueno added the triage-needed label 2026-08-05 01:22:25 -04:00

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Reference: DYNR/netbird#9511