I'm currently trying to implement two Microsoft provider with the better-auth package but I keep getting this error :

When I log with my personnal account

I verified if my callbackUrl is correctly setup in my Microsoft azure dashboard and it's the same between the dashboard callbackUrl and my app one.

There is the auth config with better-auth :

.....

const options = {
  baseURL: baseURL,
  database: prismaAdapter(adminPrisma, {
    provider: "postgresql",
  }),
  emailAndPassword: {
    enabled: true,
  },
  user: {
    additionalFields: {
      anizationId: {
        type: "string",
      },
      providerId: {
        type: "string",
      },
    },
  },
  session: {
    cookieCache: {
      enabled: true,
      maxAge: 5 * 60, // Cache duration in seconds
    },
    fields: {
      expiresAt: "expires", // e.g., "expires_at" or your existing field name
      token: "sessionToken", // e.g., "session_token" or your existing field name
    },
  },
  account: {
    accountLinking: {
      enabled: true,
    },
    fields: {
      accountId: "providerAccountId",
      providerId: "provider",
      refreshToken: "refresh_token",
      accessToken: "access_token",
      accessTokenExpiresAt: "expires_at",
      idToken: "id_token",
    },
  },
  verification: {
    // better auth not recognizing our model name, we have to override it
    modelName: "Verification",
  },
  socialProviders: {
    google: {
      clientId: process.env.GOOGLE_CLIENT_ID as string,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET as string,
      accessType: "offline",
      prompt: "consent",
      mapProfileToUser(profile) {
        return {
          ...profile,
          providerId: "google",
        };
      },
    },
  },
  plugins: [
    adminPlugin({
      defaultRole: "client",
      ac: ac,
      roles: {
        admin,
        superadmin,
        client,
      },
      adminRoles: ["superadmin", "admin"],
    }),
    magicLink({
      sendMagicLink: async ({ email, token, url }, request) => {
        await sendVerificationRequest({
          identifier: email,
          url,
          provider: {
            from: process.env.NEXT_PUBLIC_RESEND_NO_REPLY || "",
            apiKey:
              process.env.RESEND_FULL_ACCESS_API_KEY || "api_key_placeholder",
          },
        });
      },
    }),
    genericOAuth({
      config: [
        {
          providerId: "microsoft-entra-id-fgta",
          clientId: process.env.FGTA_AUTH_MICROSOFT_ENTRA_ID_ID as string,
          clientSecret: process.env
            .FGTA_AUTH_MICROSOFT_ENTRA_ID_SECRET as string,
          discoveryUrl: `/${process.env.FGTA_AUTH_MICROSOFT_ENTRA_ID_TENANT_ID}/v2.0/.well-known/openid-configuration`,
          redirectURI: `${process.env.HOSTNAME_FGTA || "http://localhost:3000"}/api/auth/oauth2/callback/microsoft-entra-id-fgta`,
          responseType: "code",
          prompt: "select_account",
          scopes: ["offline_access", "openid", "profile", "email", "Mail.Send"],
          mapProfileToUser(profile) {
            return {
              ...profile,
              providerId: "microsoft-entra-id-fgta",
            };
          },
        },
        {
          providerId: "microsoft-entra-id",
          clientId: process.env.AUTH_MICROSOFT_ENTRA_ID_ID as string,
          clientSecret: process.env.AUTH_MICROSOFT_ENTRA_ID_SECRET as string,
          discoveryUrl: `.0/.well-known/openid-configuration`,
          redirectURI: `${baseURL}/api/auth/oauth2/callback/microsoft-entra-id`,
          responseType: "code",
          prompt: "select_account",
          scopes: ["offline_access", "openid", "profile", "email", "Mail.Send"],
          mapProfileToUser(profile) {
            return {
              ...profile,
              providerId: "microsoft-entra-id",
            };
          },
        },
        // Add more providers as needed
      ],
    }),
  ],
} satisfies BetterAuthOptions;

.....

Note : the microsoft-entra-id-fgta works but not the microsoft

How can I solve this ? Does anyone did get this error ?