Sign in is easy, convenient, and secure when you use Microsoft Authenticator. Use your phone, not your password, to log into your Microsoft account. You simply have to enter your username, then approve the notification sent to your phone. Your fingerprint, face ID, or PIN will provide a second layer of security in this two step verification process. After, you'll have access to all your Microsoft products and services, such as Outlook, OneDrive, Office, and more.
Microsoft Authenticator also supports multi factor authentication for work, school, and non-Microsoft accounts. The app provides a second layer of security after your password. When logging in, you'll enter your password, and then you'll be asked for an additional way to prove it's really you. Either approve the notification sent to the Microsoft Authenticator, or enter the verification code generated by the app.
Sometimes your work or school might ask you to install the Microsoft Authenticator when accessing certain files, emails, or apps. You will need to register your device to your organization through the app and add your work or school account. Microsoft Authenticator also supports cert-based authentication by issuing a certificate on your device. This will let your organization know that the sign-in request is coming from a trusted device and help you seamlessly and securely access additional Microsoft apps and services without needing to log into each. Because Microsoft Authenticator supports single sign-on, once you have proven your identity once, you will not need to log in again to other Microsoft apps on your device.
We're always working on new features, bug fixes, and performance improvements. Make sure you stay updated with the latest version for the best authentication experience.
Ratings and ReviewsSee All
Best authentication app I’ve used by far
This authentication app provides multitudes of features that allow users to authenticate in many different ways and allows for more than just two steps in verifying your identity—providing for an even more secure experience, if that’s what you’re looking for. I previously used Google Authenticator for most of my accounts and ended up losing a couple accounts over that. This app pulled the rug from under Google’s alternative and forced them to update their app after two years to make it actually usable for their consumers. Even after the updates, this app reigns supreme with the great abundance of security features it provides to users. Although the smoothness in transitions and smooth feel of the app overall be better, the UI is modern and I applaud Microsoft for that. I’d also like to applaud them for pushing the application heavily on their website. Even more people deserve to know about it and I believe it should be also pushed in advertisements. All in all, this is as close to perfection any authentication app has ever gotten and by far.
Great on iPhone Watch app is a bust
Authenticator works very well on iPhone. It has been solid and reliable where i use it on a number of accounts. 5 stars. I was excited to hear a Apple Watch version came out. That is a complete bust, not working at all. Zero stars. The Watch app does nothing but declare that an account can be set up. Fiddling with it for a half hour gave the proclamation ‘setup successful’. Still not producing codes like it should I discovered to my dismay that the iPhone version crashed and had to be removed and reinstalled. Suggestion: take the Watch app off the store until it is properly documented and can be made to work. 5 stars for iPhone app, 0 for watch gives an average of 2.5 or 3.
I’ve been using this successfully for several months after my company required it. A few weeks ago, on a Saturday, I received an authentification alert on my phone. I wasn’t working and wasn’t trying to log in so I thought, “oh no! Is someone trying to hack my account!? I’m glad I have this handy app that will let me deny the request and block them! Ha take that hacker!”
The next time I tried to check email in Outlook, Authenticator immediately said that I denied the request, even though it never gave me the option. I’ve tried uninstalling and reinstalling this app and Outlook, called my company help desk, tried the Microsoft Support option, so far, no one has been able to fix it. So, from my experience, if you block unauthorized access to your account, which is the sole purpose of this app, your account will be permalocked and will be very difficult or (so far for me) impossible to unlock.
I can still access my work account through my laptop, I’m just locked out of the Authenticator app and thus Outlook, on my phone.
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Privacy practices may vary, for example, based on the features you use or your age. Learn More
- Microsoft Corporation
- 142.9 MB
- Requires iOS 11.0 or later.
- Requires iPadOS 11.0 or later.
- iPod touch
- Requires iOS 11.0 or later.
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- Age Rating
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With Family Sharing set up, up to six family members can use this app.