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Identity

Microsoft Single Sign-On (Entra ID) for an accountancy platform

Signing in to the platform of an accountancy software vendor with your own Microsoft account: one identity, fewer passwords and central access management via Microsoft Entra ID. Built on OAuth 2.0 and OpenID Connect.

Microsoft Entra IDOAuth 2.0OpenID ConnectMulti-tenant app registration

Works with

MicrosoftEntra ID

The question

What it was about

Staff at firms had a separate password for the platform next to their Microsoft account. That meant password resets, shared accounts and access that did not stop by itself when someone left. Firms wanted to sign in the way they do everywhere else: with their Microsoft account, including the multi-factor authentication already set up there.

What we built

The solution

A sign-in integration based on OpenID Connect with Microsoft Entra ID: the platform sends the user to Microsoft, Microsoft confirms who it is, and the platform links that identity to the right account and firm.

Firms connect their own Microsoft environment (multi-tenant), so the management of users, MFA and leavers stays with the firm. Access revoked there also expires on the platform.

Existing users were linked to their Microsoft identity without interruption; the old sign-in remained available as a fallback during the transition.

In brief

For whom

An accountancy software vendor with accounting and administration firms as customers

Role of LK Software

Design and development of the sign-in integration, set-up of the app registration

Packages

Microsoft Entra ID (Azure AD), the vendor's platform

Status

In production

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How it works

In four steps

01

Connect

The firm gives consent once for the app in its Microsoft environment.

02

Sign in

The employee clicks Sign in with Microsoft and signs in as with Outlook or Teams, including MFA.

03

Recognise

The platform links the Microsoft identity to the right account and the right permissions.

04

Manage

New and departed employees are managed in Entra ID; the platform follows automatically.

Result

What it delivers

One login for all staff, with Microsoft's MFA.

Access stops automatically when someone leaves.

Fewer password resets and support questions for the vendor.

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