/wp-admin redirects to home

  • Resolved gabbsmo

    (@gabbsmo)


    3 weeks, 2 days ago

    We discovered that for some of our sites logging in with Microsoft was not possible.

    Symptoms:

    1. When opening /wp-admin the user is immidetly redirected to the home page (/ or /en/ with WPML)
    2. Same when opening /login and clicking Sign in with Microsoft
    3. The user never sees login.microsoftonline.com – so there are no errors in the Entra ID sign in logs

    The above was tested with all other plugins disabled.

    SSO configuration:
    Idp: EntraID
    Protocol: OIDC
    Flow: Hybrid
    Redirect URI: https://foobar/wp-admin/

    wp-config.php: define( 'WPO_AUTH_SCENARIO', 'internet' );

    We found that the sites with the issue was using version 42.2 of WPO365. After reverting to version 41.3 all sites started working again.

    Debug log:

    05-25-2026 14:52:16.237016
    DEBUG
    Wpo\Services\Ajax_Service::ajax_response -> Sending an AJAX response with status OK and message
    05-25-2026 14:52:16.228554
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Found [/admin-ajax.php] thus cancelling session validation for path /wp-admin/admin-ajax.php
    05-25-2026 14:52:16.228544
    DEBUG
    Array ( [0] => /login/ [1] => admin-ajax.php [2] => wp-cron.php [3] => xmlrpc.php [4] => /wp-login.php [5] => /favicon.ico )
    05-25-2026 14:52:16.228536
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Pages Blacklist after error page / custom login has verified
    05-25-2026 14:52:16.228506
    DEBUG -> Wpo\Services\Authentication_Service::skip_authentication

    05-25-2026 14:52:16.228465
    DEBUG -> Wpo\Services\Authentication_Service::authenticate_request

    05-25-2026 14:52:15.886680
    DEBUG
    Wpo\Services\Authentication_Service::authenticate_request -> User is a WordPress-only user so no authentication is required
    05-25-2026 14:52:15.886664
    DEBUG
    Array ( [0] => /login/ [1] => admin-ajax.php [2] => wp-cron.php [3] => xmlrpc.php [4] => /wp-login.php [5] => /favicon.ico )
    05-25-2026 14:52:15.886652
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Pages Blacklist after error page / custom login has verified
    05-25-2026 14:52:15.886612
    DEBUG -> Wpo\Services\Authentication_Service::skip_authentication

    05-25-2026 14:52:15.886538
    DEBUG -> Wpo\Services\Authentication_Service::authenticate_request

    05-25-2026 14:52:13.020830
    DEBUG
    Wpo\Services\Authentication_Service::authenticate_request -> User requesting /wp-admin/ is not logged in and therefore sending the user to Microsoft to sign in
    05-25-2026 14:52:13.020796
    DEBUG
    Array ( [0] => /login/ [1] => admin-ajax.php [2] => wp-cron.php [3] => xmlrpc.php [4] => /wp-login.php [5] => /favicon.ico )
    05-25-2026 14:52:13.020771
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Pages Blacklist after error page / custom login has verified
    05-25-2026 14:52:13.020288
    DEBUG -> Wpo\Services\Authentication_Service::skip_authentication

    05-25-2026 14:52:13.020229
    DEBUG -> Wpo\Services\Authentication_Service::authenticate_request

    05-25-2026 14:52:08.403318
    DEBUG
    Wpo\Services\Ajax_Service::ajax_response -> Sending an AJAX response with status OK and message
    05-25-2026 14:52:08.393135
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Found [/admin-ajax.php] thus cancelling session validation for path /wp-admin/admin-ajax.php
    05-25-2026 14:52:08.393123
    DEBUG
    Array ( [0] => /login/ [1] => admin-ajax.php [2] => wp-cron.php [3] => xmlrpc.php [4] => /wp-login.php [5] => /favicon.ico )
    05-25-2026 14:52:08.393114
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Pages Blacklist after error page / custom login has verified
    05-25-2026 14:52:08.393068
    DEBUG -> Wpo\Services\Authentication_Service::skip_authentication

    05-25-2026 14:52:08.393008
    DEBUG -> Wpo\Services\Authentication_Service::authenticate_request

    05-25-2026 14:52:08.314989
    DEBUG
    Wpo\Services\Ajax_Service::ajax_response -> Sending an AJAX response with status OK and message
    05-25-2026 14:52:08.304217
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Found [/admin-ajax.php] thus cancelling session validation for path /wp-admin/admin-ajax.php
    05-25-2026 14:52:08.304206
    DEBUG
    Array ( [0] => /login/ [1] => admin-ajax.php [2] => wp-cron.php [3] => xmlrpc.php [4] => /wp-login.php [5] => /favicon.ico )
    05-25-2026 14:52:08.304197
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Pages Blacklist after error page / custom login has verified
    05-25-2026 14:52:08.304155
    DEBUG -> Wpo\Services\Authentication_Service::skip_authentication

    05-25-2026 14:52:08.304105
    DEBUG -> Wpo\Services\Authentication_Service::authenticate_request

    05-25-2026 14:52:08.220697
    DEBUG
    Wpo\Services\Ajax_Service::ajax_response -> Sending an AJAX response with status OK and message
    05-25-2026 14:52:08.204327
    DEBUG
    Wpo\Services\Authentication_Service::skip_authentication -> Found [/admin-ajax.php] thus cancelling session validation for path /wp-admin/admin-ajax.php

    • This topic was modified 3 weeks, 2 days ago by gabbsmo.
Viewing 15 replies - 1 through 15 (of 18 total)
1 2
  • Simon Mista

    (@simonmista)

    3 weeks, 2 days ago

    I have the same issue with versions 42.2 and 42.1. The “redirect to front page” error occurs when trying to access /wp-admin or when clicking “Sign in with Microsoft”. Instead of redirecting to Microsoft login, the site redirects back to the homepage. Because of this, I downgraded to version 42.0, and that version works correctly.

    Please fix this issue ASAP @wpo365

    Thanks, Simon

    Plugin Author Marco van Wieren

    (@wpo365)

    3 weeks, 2 days ago

    Hi @simonmista and @gabbsmo

    You’re absolutely right. The last update ignored the custom authentication scenario WPO_AUTH_SCENARIO. I have just released version 43.3. This release should resolve this issue.

    Thank you for making me aware of this and I am sorry for any inconvenience!

    -Marco

    Thread Starter gabbsmo

    (@gabbsmo)

    3 weeks, 1 day ago

    Thank you for the swift fix. It works as expected now.

    Thread Starter gabbsmo

    (@gabbsmo)

    3 weeks, 1 day ago

    @wpo365 I may have been too quick. While it seemed to work on its own – it is not working when I reactivate WPML.

    When I open a new tab with incognito mode and browse to /wp-admin I am redirected to /en/wpo/sso/start/ (/en/ is our language path in WPML).

    Plugin Author Marco van Wieren

    (@wpo365)

    3 weeks, 1 day ago

    Hi @gabbsmo

    I am also looking at a different but similar issue. I guess the problem may be that the plugin is comparing the home URL + the custom sso-start endpoint (being wpo/sso/start). If WPML is also adding a rewrite rule, then things are getting a bit messy of course.

    I will look into this issue now and let you know my findings and next step.

    Thank you for your patience!

    Plugin Author Marco van Wieren

    (@wpo365)

    3 weeks, 1 day ago

    Hi @gabbsmo

    I have just now released version 42.4. I reviewed the current detection and realized that are also other scenarios where the detection will fail. I have updated the detection to “must end with”, which should also be able to work-around the URL changed by WPML – for example when it adds /en/.

    Thank you again for bringing this to my attention!

    -Marco

    Thread Starter gabbsmo

    (@gabbsmo)

    3 weeks ago

    Hi @wpo365.

    I just updated and in private browsing /wp-admin redirects to /sv/wpo/sso/start/?cb=6421d108-c591-43f9-8c2a-f0a70ba0893a for me now. I see your spinning animation but I never get to login.microsoftonline.com.

    Clicking ‘Sign in with Microsoft’ on /login seems to work however.

    Plugin Author Marco van Wieren

    (@wpo365)

    3 weeks ago

    Hi @gabbsmo

    Are you using the Teams integration? If you do not use the site in a Microsoft Teams App or Tab (or in an iframe), then please try and uncheck the option “Use client-side redirect” on the plugin’s “Login / logout” configuration page, clear all server caches and test again.

    Hope this helps!

    Thread Starter gabbsmo

    (@gabbsmo)

    3 weeks ago

    Hi @wpo365,

    No, we are not using the Microsoft Teams integration. I disabled client side redirect and it seems to work on my end. I will let you know if I or our other users find any more issues.

    Best regards

    Simon Mista

    (@simonmista)

    3 weeks ago

    Hi @wpo365 ,

    unfortunately this still isn’t working on my end. Opening /wp-admin redirects to the sso/start endpoint but never reaches login.microsoftonline.com – it just stays on the spinner.

    Example URL: https://www.depak.de/wp/wp-admin/
    → redirects to https://www.depak.de/wpo/sso/start (and stops there)

    I have these two plugins:

    • WPO365 | LOGIN – version 42.4
    • WPO365 | LOGIN PLUS – version 42.1

    Quick Update: version 42.3 worked fine before

    Thanks,
    Simon

    Plugin Author Marco van Wieren

    (@wpo365)

    3 weeks ago

    Thank you @gabbsmo for confirming that it works when you disable the use of the client-side redirect. When you don’t need Teams or iframe support, then you’re anyway better of with it. The plugin’s Self-test would have also highlighted this. I will – however – look into re-enabling support for the combination of defining WPO_AUTH_SCENARIO in a wp-config.php and client-side redirection.

    Again, thanks and let me know if anything comes up!

    Plugin Author Marco van Wieren

    (@wpo365)

    3 weeks ago

    Hi @simonmista

    I checked the URL that you posted and noticed that I indeed land at the wpo/sso/start?cb=… and that indicates that you didn’t yet disable the option “Use client-side redirect” on the plugin’s “Login / logout” configuration page or that you need to clear all server caches. Please ensure that this specific option is disabled (when you’re not embedding the WordPress site in Teams or an iframe), clear all server caches and test again.

    Hope that helps!

    Plugin Author Marco van Wieren

    (@wpo365)

    3 weeks ago

    Hi @gabbsmo and @simonmista

    For the sake of clarity, I would like the add the following. When you add the following line to your wp-config.php define( ‘WPO_AUTH_SCENARIO’, ‘internet’ ); then the plugin will try and bail out as soon as a request is not for your WP admin. Version 42.4 fixes this, but the combination with “Use client-side redirect” on the plugin’s “Login / logout” configuration page (causing the user to be redirected to Microsoft using a small JavaScript instead of being redirected by the server) has been overlooked. And as a result – if “Use client-side redirect” is enabled, a user is not redirected to Microsoft but instead ends up at https://<your website>/wpo/sso/start?cb=xyz. To fix this, there are actually 2 options:

    • Leave “Use client-side redirect” checked, but instead check the option “Use admin URL to initiate authentication” on the plugin’s “Miscellaneous” configuration page. This is the recommended solution when you need client-side redirection, for example because your website is embedded in Teams or an iframe.
    • Uncheck the “Use client-side redirect” option on the plugin’s “Login / logout” configuration page.

    Hope this helps you and others alike!

    -Marco

    Plugin Author Marco van Wieren

    (@wpo365)

    2 weeks, 6 days ago

    Hi

    I just released version 42.5. This version fixes the issue created by the combined options of define( ‘WPO_AUTH_SCENARIO’, ‘internet’ ); and Use client-side redirect enabled.

    Hope this helps!

    -Marco

    Zachary Watkins

    (@zwatkinstamu)

    2 weeks, 6 days ago

    Our site is still experiencing issues with link redirects on version 42.5. Users visiting a non-home page while not logged in are redirected to the home page after logging in, instead of being directed to the non-home page they were attempting to visit.

    We do not have any WPO_* constants defined and I have “Always send user to default / custom landing page” unchecked.

Viewing 15 replies - 1 through 15 (of 18 total)
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