Can I use an Instagram authentication app on my computer?

Yes. Instagram needs an app that produces standard six-digit codes, and the Authenticator extension produces them in Chrome. Setting it up on the computer also means you can sign in on the web without reaching for your phone.

Is an authentication app better than SMS for Instagram?

Yes. SMS codes can be intercepted by someone who takes over your phone number, and they do not arrive when you are abroad or offline. An authentication app generates codes on your device with no network at all.

What if I lose access to my authentication app?

Sign in with a backup code or another method you set up, then set the authentication app up again. Keeping the extension’s automatic backups on, and exporting a password-protected backup, means a reinstall does not lose the account.

Can I use the same authentication app on my phone too?

Yes. Meta allows more than one device. The simplest way is during setup: scan the same QR code with your phone app as well, before you confirm — both will show the same codes. Later you can export the account from the extension as an otpauth:// link in Settings → Export.

Instagram Authenticator App on PC — Two-Factor Authentication

Instagram accounts are taken over by phished passwords every day, and getting one back is slow. Meta recommends an authentication app over text messages: codes cannot be intercepted with your phone number, and you can keep them on more than one device.

Turn on two-factor authentication on Instagram

Sign in at instagram.com on your computer and click “More” in the bottom left.
Choose “Settings”, then “Accounts Center”.
Open “Password and security” → “Two-factor authentication” and select your Instagram account.
Choose “Authentication app” and click “Next”.
Add the key or QR code Instagram shows to the extension as described below, then enter the confirmation code on Instagram.

Instagram’s own instructions

Add Instagram to Authenticator

Install 2FA Authenticator from the Chrome Web Store and pin it to the toolbar, so its icon is one click away.
Leave the Instagram page with the QR code open. Click the Authenticator icon, then “Add Account” → “QR Code” → “Scan QR from screen”.
The account appears in the list with a six-digit code that changes every 30 seconds. Rename it if you like — the name is only for you.
Go back to Instagram and type the current code into the confirmation field. If it is about to expire, wait for the next one.
Instagram confirms that two-factor authentication is on. From now on it will ask for a code when you sign in — click the extension icon and copy it.

No QR code, or it will not scan? Look for the option to enter a key manually on Instagram’s setup screen, copy the key, and add it in the extension with “Add Account” → “Manual” → “Secret Key”.

Get 2FA Authenticator for Chrome — free

Save your Instagram backup codes

In Accounts Center → Password and security → Two-factor authentication, select your account and open “Additional methods” → “Backup codes”. Write them down or save them away from this computer — a backup code signs you in when the authentication app is not available.

The code is not accepted?

Almost always the computer’s clock. The codes are calculated from the current time, so a clock that is a minute off produces codes that look right and are refused. Turn on automatic date and time in your system settings — step-by-step for Windows, macOS and Linux.

If the clock is right, check the key itself: paste it into the TOTP code generator and compare the code with the one in the extension. If they differ, the key was copied wrong — add the account again.

Questions

Can I use an Instagram authentication app on my computer?: Yes. Instagram needs an app that produces standard six-digit codes, and the Authenticator extension produces them in Chrome. Setting it up on the computer also means you can sign in on the web without reaching for your phone.
Is an authentication app better than SMS for Instagram?: Yes. SMS codes can be intercepted by someone who takes over your phone number, and they do not arrive when you are abroad or offline. An authentication app generates codes on your device with no network at all.
What if I lose access to my authentication app?: Sign in with a backup code or another method you set up, then set the authentication app up again. Keeping the extension’s automatic backups on, and exporting a password-protected backup, means a reinstall does not lose the account.
Can I use the same authentication app on my phone too?: Yes. Meta allows more than one device. The simplest way is during setup: scan the same QR code with your phone app as well, before you confirm — both will show the same codes. Later you can export the account from the extension as an otpauth:// link in Settings → Export.

Your codes, one click from the login page

Authenticator keeps your 2FA codes in the browser, on your device only — free, open source, no account and no phone needed. Local backups and optional password protection come built in.