Unexpected button behaviour when using the prompt=create parameter in Entra External ID user flows
Hi, In a recent workload, I'm assisting a client to implement Entra External ID for streamlined authorization as well as single sign-on for associated registered external facing third-party applications for external customer users through their Entra External ID identity, as well as assisting the client with auth branding and other UI customizations, and preparing Entra ID federation custom OIDC providers and configuration for enabling SSO with organizational internal and remote work- and school accounts etc. The sign-up / create account experience is of importance to the client, as a rather substantial amount of users are expected to sign-up via self-service sign-up following having received an invite via another app. To ensure that the user lands on the create account view, in order to minimize the number of steps and actions the users need to take to get there, the prompt=create parameter is used to pre-select the sign-up/register experience in the user flows UI. Having stress-tested the user flows and experience recently, we noticed that in a specific scenario, some UI elements behave in a manner that could be described as unexpected, and even though a workaround has mitigated it to some extent, the behaviour of some elements could probably be improved a bit to ensure an even more consistent user experience in the built-in user flows. Specifically, if the user flow is invoked with the prompt parameter set, the user lands on the create account screen as expected, however, unless custom CSS modification is applied, the Back button that would typically be there, as if having arrived there from the initial sign-in screen where it’s also displayed. If pressing the Back button displayed on the Create account view when having navigated there with the prompt=create set in the /authorize request, pressing the button seemingly doesn’t have any impact or result in any action, one can click it, but nothing happens. I'd suspect it's perhaps a "remnant" from if the flow is invoked without any prompt parameter set, or with prompt=login set, but when prompt=create is set, there is no state/page history in the UI to navigate back to, as no previous page has been displayed or rendered yet and added to the history, and the Back button click thus doesn’t have any effect. In general, I think buttons that don't have any tangible action should not be displayed, also, if prompt=login is set, the Back button isn't shown then either on the very initial user flow view shown then, so it would seem the built-in user flows actually already follow such approach in fact, but not when the prompt=create has been set, thus causing some inconsistency in the UI that users could notice unless custom CSS styling is applied. The expected behaviour for our business case would be that if prompt=create is set, then, similar to the prompt=login, no Back button should be displayed, or, if shown, it should result in some navigation (perhaps something like javascript.go(-1), but that could/would be dependent on from where the user arrived, e.g., going back a step in the browser history won't work if the user clicked a link from an invite email ) and preferably not be non-actionable. Furthermore, on the topic of the Back button and its behaviour when the prompt=create parameter is set, there is another case at which we observed some unexpected button behaviour as well, that could probably benefit from some attention. At a specific second scenario, it seems that the Continue button is displayed without providing any action, and when clicking the Back button then, clicking it seemingly resets the "create account", state likely set by the prompt=create initially, and instead switches the flow back to the sign-in state, which can at least affect the display text of some subsequent buttons shown in later steps in the UI. The user arrives at a built-in Entra External ID user flow /authorize endpoint, with the prompt=create query parameter set The user triggers the OTP challenge by entering an email address to verify the email address The user receives the OTP code but enters it incorrectly, i.e., doesn't copy the full code length of eight digits, and instead enters/pastes six of the eight code digits. The UI then shows an error message that the code could not be used/validated, and the email address field is displayed again with the email address that was used for the verification attempt prefilled. If the user clicks the Continue button at this stage, nothing happens. If the user clicks the Back button instead (given that it’s not hidden), it shows the same view one more time, with the Back and Continue buttons at the bottom. However, if the user clicks the Continue button this time, it works and a new code is sent. On the next screen, where the newly sent code can be entered, instead of a button named "Continue", it will now instead show a button with the text "Sign-in" (it would seem like the create account state has gotten lost somewhere along the way at this point, perhaps when the back button in the step 5 above was pressed). If one omits the prompt=create parameter, or when using prompt=login, things seem to work fine, the above occurs when the prompt=create is set. The reason why is the prompt=create is used is due to a business requirement to try to minimize the steps, especially in conjunction with the registration/sign-up, as far a possible when signing up. We have opted for the built-in user flows, not the self-hosted native authentication UI pages, for this project, and then as I understand it, it is the prompt=create parameter that can/should be used to enable the user to land directly on the registration page without having to navigate there manually via the sign-up link, that is otherwise shown on the initial sign-in page. It would thus be great if the prompt=create parameter could have some attention (or perhaps if a dedicated sign-up user flow type could be added potentially, even though that would perhaps warrant some update to the user flow app linking as well, as my understanding is that one user flow can be linked to one app registration at a time currently) to avoid that some buttons become unresponsive when the parameter is used, or falls back to sign-in, to improve the built-in user flows further, as the prompt=create fulfils the business requirement well otherwise. If there would be any further/follow-up questions on the above, e.g., to clarify the requirement, or further explain the reproduction steps and behaviour observed, or anything else, please tell, and I'll ensure to get back as soon as possible. Also, would someone have some input on potential other/additional ways to pre-select the create account/sign-up experience, that would naturally be much appreciated as well, thanks! Regards Kristoffer
Can External ID (CIAM) federate to an Azure AD/Entra ID tenant using SAML?
What I'm trying to achieve I'm setting up SAML federation FROM my External ID tenant (CIAM) TO a partner's Entra ID tenant (regular organizational tenant) for a hybrid CIAM/B2B setup where: Business users authenticate via their corporate accounts (OIDC or SAML) Individual customers use username/password or social providers (OIDC) Tenant details / Terminology: CIAM tenant: External ID tenant for customer-facing applications IdP tenant: Example Partner's organizational Entra ID tenant with business accounts Custom domain: mycustomdomain.com (example domain for the IdP tenant) Configuration steps taken Step 1: IdP Tenant (Entra ID) - Created SAML App Set up Enterprise App with SAML SSO Entity ID: https://login.microsoftonline.com/<CIAM_TENANT_ID>/ Reply URL: https://<CIAM_TENANT_ID>.ciamlogin.com/login.srf NameID: Persistent format Claim mapping: emailaddress → user.mail Step 2: CIAM Tenant (External ID) - Added SAML IdP (Initially imported from the SAML metadata URL from the above setup) Federating domain: mycustomdomain.com Issuer URI: https://sts.windows.net/<IDP_TENANT_ID>/ Passive endpoint: https://login.microsoftonline.com/mycustomdomain.com/saml2 DNS TXT record added: DirectFedAuthUrl=https://login.microsoftonline.com/mycustomdomain.com/saml2 Step 3: Attached to User Flow Added SAML IdP to user flow under "Other identity providers" Saved configuration and waited for propagation The problem It doesn't work. When testing via "Run user flow": No SAML button appears (should display "Sign in with mycustomdomain") Entering email address removed for privacy reasons doesn't trigger federation The SAML provider appears configured but never shows up in the actual flow Also tried using the tenant GUID in the passive endpoint instead of the domain - same result My question Is SAML federation from External ID to regular Entra ID tenants actually possible? I know OIDC federation to Microsoft tenants is (currently, august 2025) explicitly blocked (microsoftonline.com domains are rejected). Is SAML similarly restricted? The portal lets me configure everything without throwing any errors, but it never actually works. Am I missing something in my configuration? The documentation for this use case is limited and I've had to piece together the setup from various sources. Or is this a fundamental limitation where External ID simply can't federate to ANY Microsoft tenant regardless of the protocol used?Does Rights Management Service currently support MFA claims from EAM?
We've been testing EAM (external authentication methods) for a few months now as we try to move our Duo configuration away from CA custom controls. I noticed today that when my Outlook (classic) client would not correctly authenticate to Rights Management Service to decrypt OME-protected emails from another org. It tries to open the message, fails to connect to RMS, and opens a copy of the email with the "click here to read the message" spiel. It then throws a "something is wrong with your account" warning in the Outlook client's top right corner. If I try to manually authenticate & let it redirect to Duo's EAM endpoint, it simply fails with an HTTP 400 error. When you close that error, it then presents another error of "No Network Connection. Please check your network settings and try again. [2603]". I can close/reopen Outlook and that warning message in the top right stays suppresses unless I attempt signing into RMS all over again. However.. If I do the same thing and instead use an alternate MFA method (MS Authenticator, for example), it signs in perfectly fine and will decrypt those OME-protected emails on the fly in the Outlook client, as expected. I verified that we excluded "aadrm.com" from SSL inspection and that we're not breaking certificate pinning. So all I can assume at the moment is that Rights Management Service isn't honoring MFA claims from EAM. Any experience/thoughts on this? Thanks in advance!
Can the built-in "No account? Create one" link redirect to a custom sign-up page?
I'm using Microsoft Entra External ID with a built-in sign-in/sign-up user flow. On the Microsoft-hosted sign-in page, the "No account? Create one" link always redirects users to the default Entra sign-up page. I already have a custom registration page and would like this built-in link to redirect to my custom URL instead. Is there any supported way to customize the destination of this link in a built-in user flow? If not, could someone confirm whether this behavior is fixed by design? Thanks!
AADSTS50105 error message is unreadable for end users — UX improvement suggestion
1. What’s wrong with the current error message a. It’s written for administrators, not users The message exposes: Internal system names (AADSTS50105) GUIDs (aaaabbbb-cccc-dddd-eeee-ffff01234567) Identity provider jargon (“direct member of a group with access”) None of this helps the person who sees the error decide what to do next. b. The actual problem is buried in a wall of text The real issue is simply: You don’t have permission to access this app. Instead, the message forces users to: Read a long paragraph Decode domain-specific language Guess which part matters Cognitively, this is high effort for low payoff. c. “Contact your administrator” is vague and unhelpful Users ask: Which administrator? IT? Security? App owner? Their manager? What should they say? Without context, users either: Ignore the error Forward screenshots randomly Open the wrong support ticket d. Error codes without guidance increase support load AADSTS50105 may be meaningful internally, but: Users don’t know whether to Google it Support teams receive unclear tickets (“it doesn’t work”) This paradoxically raises support cost instead of lowering it. 2. What a better error message should do A good error message answers four questions in order: What happened? Why did it happen (in plain language)? What can the user do next? Who specifically can help? And it does so in under 30 seconds of reading time. 3. Example of a much better error message You don’t have access to [APPLICATION] Your account (email address removed for privacy reasons) isn’t currently authorized to use [APPLICATION]. This usually means: You haven’t been added to the required security group, or Access hasn’t been requested or approved yet. What to do next If you believe you should have access, contact IT Service Desk or your [APPLICATION] owner and request access. Helpful details to include in your request Application name: [APPLICATION] Your email: email address removed for privacy reasons Error reference: Access not assigned (Error ID: AADSTS50105 — for IT use) 4. Optional but high-impact improvement: Add a “Request Access” button or link One-click takes users to: ServiceNow / Jira / internal form Auto-populates app name and user email Administrators configure support link when configuring the applicationEntra App Gallery required for Excel AddIn
Hi, We have an Excel Addin published to Microsoft AppSource: https://appsource.microsoft.com/en-us/product/office/WA200009029?tab=Overview The Excel Addin uses Entra ID to obtain an OIDC token to securely / seamlessly access MS 365 SharePoint on behalf of the user. In order to achive this the Entra ID subscription needs the TR4E application registered as an Enterprise Application / App Registration. My question is whether I need to submit the TR4E application separately to the Entra App Gallery, so it can be installed by the Entra ID admin - or will the registration in Entra ID happen automatically when a new user first tries using TR4E? I note that MS has suspended new application submissions for Entra App Gallery, which means our customers would need to manually create the Entra ID Enterprise Application (which is not a great experience). Cheers, AndrewEntra External Authentication Method giving AADSTS900144 missing externalAuthenticationMethodId
Hi All, Has anyone else noticed in the last couple of days if EAM (External Authentication Method) is configured for MFA end users are getting: AADSTS900144: The request body must contain the following parameter: 'externalAuthenticationMethodId' Its been working for us fine for months/years but the last couple of days we are seeing heaps of the error above. I have raised a support case but zero response so far Regards, Daniel
Problems configuring federation to SAML IdP
Hi. I'm trying to configure our Entra domain to federate to our existing IdP, following the guidance found https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-fed-saml-idp#supported-bindings and am having real problems when it comes to using the Microsoft Graph API in PowerShell. After eventually working out what permissions I needed to request (more than what is stated in the doc), I ran the New-MgDomainFederationConfiguration cmdlet, and received the following error: "FederatedIdpMfaBehavior cannot be empty" This parameter is not mentioned in the doc either. So, then I added that parameter, and got the following: "Domain already has Federation Configuration set." But when I run Get-MgDomainFederationConfiguration, I get: "Resource 'federationConfiguration' does not exist or one of its queried reference-property objects are not present." When I run Get-MgDomain, AuthenticationType shows as "Federated", but I still see a managed login when I check. So I seem to be stuck with it seemingly half-configured, with no way to view or remove the configuration. Any ideas? Thanks, Nick
MFA claim expired - Breaking web apps
Hi All, Testing: - Passwordless (Phone Sign-in baseline) - Sign in Frequency (Shorter than tenant setting) - Desktops are hybrid, receiving their PRT but no not use WH4B - Tenant still has Remember Trusted device for X Days enabled I'm seeing some strange behavior where Azure AD is showing the MFA claim has expired when trying to access web portals (Auth loops, webapp access issues (Outlook fine but not Teams), error messages). If I revoke the session completely and re-login to the native app pop-ups, things are fine again for a while. If the user closes the native auth window, the native apps limp along even with the MFA claim issue within the browser but the webapps are still broken. WebApps continue to SSO in with the token in this state. Research is pointing that it might be the tenant wide remember trusted device settings, although I am not in a position to disable this global setting until after the test deployment. Disabling the SIF, seems to resolve the MFA claim expiry immediately, i'll check in a few days to see if that is still the case as it'd be outside the trusted device setting interval too. I have a support request at the moment with the advice to enable persistent browser sessions which I'll test but don't think that is the core of the issue. Is their a way around this, have others had similar issues? Thanks!
