Does Perimeter 81 work with authenticator apps like MS Authenticator App?

Yes. Perimeter 81 supports TOTP authenticator apps, so you can generate its two-factor codes in MS Authenticator App.

Is Perimeter 81 two-factor authentication free?

Yes. Enabling authenticator-app 2FA on Perimeter 81 is free — you only need the free MS Authenticator App.

What if I lose access to my Perimeter 81 2FA codes?

Use the backup or recovery codes you saved during setup. If you didn't save them, contact Perimeter 81 support to regain access, then re-add the account to MS Authenticator App.

Should I use an authenticator app or a security key on Perimeter 81?

Perimeter 81 supports both. An authenticator app like MS Authenticator App is free and works on any phone; a hardware security key adds phishing resistance. You can enable both.

How to enable 2FA on Perimeter 81

← Perimeter 81 overview Supported

Perimeter 81 supports app-based two-factor authentication (2FA). Turning it on adds a second layer of protection, so a stolen password alone can't unlock your Perimeter 81 account.

Step-by-step setup

1
Sign in to Perimeter 81 and open your Perimeter 81 account security settings.
2
Turn on two-factor authentication and choose the authenticator-app option.
Look for "Authenticator app", "Authentication app", or "TOTP" rather than SMS.
3
Scan the QR code with MS Authenticator App.
Open MS Authenticator App, tap add, and point your camera at the QR code Perimeter 81 displays. Can't scan? Enter the setup key manually instead.
4
Enter the 6-digit code to confirm.
Type the code MS Authenticator App generates to verify and link your Perimeter 81 account.
5
Save your backup codes.
Store the recovery codes Perimeter 81 gives you somewhere safe — you'll need them if you lose your phone.

Menu names on Perimeter 81 can change — the official Perimeter 81 2FA documentation ↗ always has the exact, current path.

Frequently asked questions

Does Perimeter 81 work with authenticator apps like MS Authenticator App?: Yes. Perimeter 81 supports TOTP authenticator apps, so you can generate its two-factor codes in MS Authenticator App.
Is Perimeter 81 two-factor authentication free?: Yes. Enabling authenticator-app 2FA on Perimeter 81 is free — you only need the free MS Authenticator App.
What if I lose access to my Perimeter 81 2FA codes?: Use the backup or recovery codes you saved during setup. If you didn't save them, contact Perimeter 81 support to regain access, then re-add the account to MS Authenticator App.
Should I use an authenticator app or a security key on Perimeter 81?: Perimeter 81 supports both. An authenticator app like MS Authenticator App is free and works on any phone; a hardware security key adds phishing resistance. You can enable both.

Generate your Perimeter 81 codes in MS Authenticator App

Free, offline, and encrypted. One tap for every 6-digit code.

Get the app

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