Microsoft Authenticator Review 2026
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Microsoft Authenticator
Microsoft Authenticator is a strong choice for users in the Microsoft ecosystem, offering passwordless sign-in for Microsoft accounts, cloud backup, and standard TOTP support. It is free and well-maintained.
Best for
Microsoft 365 users and organizations using Azure Active Directory
Not for
Users who want desktop app support or multi-platform sync beyond iOS/Android
Prices verified April 2026. Always confirm directly with provider.
Pros
- Passwordless sign-in for Microsoft accounts
- Cloud backup with Microsoft account recovery
- Number matching for phishing-resistant push approvals
- Auto-fill passwords, addresses, and payment info
- Managed by Microsoft with enterprise-grade security
- Free with no premium tiers or limitations
Cons
- No desktop application available
- Cloud backup only through Microsoft or iCloud accounts
- Transfer between iOS and Android requires manual re-setup
- Best features are Microsoft-ecosystem specific
Microsoft Authenticator Review: Best for the Microsoft Ecosystem
Microsoft Authenticator is a free 2FA app that excels within the Microsoft ecosystem while also functioning as a standard TOTP authenticator for any service. Its passwordless sign-in feature for Microsoft accounts represents the future of authentication, and number matching provides phishing-resistant push notifications.
Passwordless Microsoft Sign-In
For Microsoft accounts (personal and work/school), Microsoft Authenticator enables passwordless sign-in. Instead of entering a password and then a 2FA code, you simply approve a push notification and verify with biometrics. This eliminates passwords entirely for Microsoft services, reducing phishing risk.
Number Matching
When using push-based MFA for Azure AD / Entra ID, Microsoft Authenticator requires number matching: the login screen displays a two-digit number that you must enter in the app before approving. This prevents MFA fatigue attacks where attackers send repeated push notifications hoping for accidental approval.
Standard TOTP Support
Beyond Microsoft-specific features, the app functions as a standard TOTP authenticator compatible with any service that supports Google Authenticator or similar apps. Adding accounts is simple via QR code scanning, and codes are displayed clearly with countdown timers.
Cloud Backup
Microsoft Authenticator supports cloud backup of your 2FA tokens. On iOS, backup uses iCloud. On Android, backup uses your Microsoft account. This protects against device loss, though cross-platform transfer (iOS to Android or vice versa) requires re-registering tokens.
Password Auto-Fill
The app also functions as a basic password manager, auto-filling saved passwords, addresses, and payment information in mobile browsers and apps. While not as full-featured as dedicated password managers, it provides convenient basic credential management.
Pricing
Completely free with no premium tiers. Download Microsoft Authenticator from your app store.
Final Verdict
Microsoft Authenticator is the clear choice for users and organizations in the Microsoft ecosystem. Passwordless sign-in and number matching are genuinely innovative security features. As a standard TOTP authenticator, it is competent but lacks the desktop support and export capabilities of Authy. Microsoft Authenticator is a solid, free 2FA option.
Reviewed by Thomas — NorwegianSpark · How we review