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Comparisons and answers about two-factor authentication on a computer, with a source for every claim and the date it was checked.

Updated October 9, 2026Microsoft Authenticator alternative: 2FA codes on your PC, and how to switchMicrosoft Authenticator runs only on phones and has no export. Free alternatives for PC, Chrome and phone compared, what changes for a work account, and how to switch.Read article
Updated October 9, 2026Authenticator app without a phone: how to get 2FA codes on your computerYes, 2FA works without a phone. Free authenticator apps for PC, Mac and Chrome compared, when a phone is still required, and how to keep codes on a computer safely.Read article
Updated October 9, 2026How to move 2FA to a new phone, and what to do if you lost the old oneMove Google Authenticator, Microsoft Authenticator, Authy or 2FAS codes to a new phone, see which need the old one, and get back into your accounts after losing your phone.Read article
Updated October 9, 20262FA code not working? Why an authenticator code is rejected, and how to fix itYour authenticator app's 2FA code is rejected as invalid or wrong? Usually the website made a new QR code, or the code comes from another entry or another app. The causes, with a fix for each.Read article
Updated September 28, 2026Best authenticator extensions for Chrome (2026)Seven Chrome extensions that give you 2FA codes, compared on users, rating, price, open source and whether you need an account or a phone. Numbers from the Chrome Web Store.Read article
Updated September 28, 2026Authy desktop alternative: where to get 2FA codes on a computer nowAuthy's desktop apps shut down on March 19, 2024 and Authy has no export. Free replacements for Windows, macOS, Linux and Chrome compared, and how to move your accounts over.Read article
Updated September 28, 2026Google Authenticator for Chrome: there is no official extension. Here is what worksGoogle makes Google Authenticator only for Android and iPhone. How to get the same 2FA codes in Chrome, and how to move your accounts over with Google's own export QR code.Read article