How to add business account on my mobile phone

Magdalena Saja 0 Reputation points
2026-08-17T22:06:07.1833333+00:00

Hi, I got recently a business Teams account and it is set and working fine on business laptop however I cant add this account on my iphone. The Authentication app is asking for a password, however there was not password created while setting the account for the first time on a business laptop. It was set simply by verifying the Authenticator app code.

Microsoft Teams | Microsoft Teams for business | Teams on mobile devices
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  1. Aetherin 870 Reputation points Independent Advisor
    2026-08-17T22:23:09.3733333+00:00

    Hi @Magdalena Saja,

    Based on my experience, this can happen if your organization uses passwordless sign-in or if your business laptop was preconfigured by IT, so you may not have needed to enter a password when the account was first set up. However, when adding the account to Teams or Microsoft Authenticator on a new iPhone, you may be prompted to sign in using a password, an existing Authenticator registration, or another authentication method allowed by your organization.

    In this situation, I recommend contacting your company's IT department or Microsoft 365 administrator. They may need to reset your password, re-register your authentication methods, or provide a Temporary Access Pass (TAP) so that you can set up the account on your new device.

    You can share the following Microsoft documentation with them for reference:

    I hope this information is helpful and points you in the right direction. Your IT administrator will have the necessary permissions and access to verify your organization's authentication settings and provide the appropriate assistance.

    Thank you for taking time.


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  2. AI answer

    2026-08-17T22:06:25.7166667+00:00

    For a work or school Teams account on iPhone, the account should be added in Microsoft Authenticator as a work or school account, not by entering a password inside Authenticator first.

    Use this setup flow:

    1. On a browser, sign in to the Security info page for the business account at https://mysignins.microsoft.com/security-info.
    2. Select Add sign-in method.
    3. Choose Microsoft Authenticator and select Add.
    4. If Authenticator is already installed on the iPhone, select Next to show the QR code.
    5. On the iPhone, open Microsoft Authenticator.
    6. Tap the plus icon, then select Add account.
    7. Select Work or school account.
    8. Tap Scan a QR Code and scan the QR code shown on the Security info page.

    If the app is prompting for a password instead, use the QR code method above rather than trying to sign in directly in the app.

    There is also a sign-in method using credentials in Authenticator, but that works only when admins have enabled phone sign-in using Authenticator.

    If the account was already set up on another device and the current iPhone cannot complete registration, the existing authentication method may need to be re-registered. In that case, on the Security info or Additional security verification page, remove the old phone/authentication entry if present, then add the new phone again and set up Microsoft Authenticator on the iPhone.

    If the organization uses Intune app protection or device registration, Outlook and other Microsoft 365 mobile apps can also prompt for Microsoft Authenticator during setup, and device Register prompts may need to be completed before access works.


    References:

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