Steam Guard adds a security layer that stops someone else from logging into your account, even if they have your password

Steam Guard is a two-step verification system from Valve that requires you to confirm your identity when you log in from a new device or location. You can set it up in about five minutes through your Steam account settings. The system sends a code to your email or authenticator app — you enter the code to finish logging in. Once enabled, Steam Guard makes it much harder for someone to access your account without your permission.

Steam offers two ways to use Steam Guard: email-based codes or a mobile authenticator app. Email codes arrive instantly and work on any device. The authenticator app generates codes on your phone and does not require internet, but you need to keep the app installed. Most players use email codes because they are simpler to set up.

Key Takeaways

  • Steam Guard sends a security code to your email each time you log in from a new device, and you must enter it to access your account.
  • You turn on Steam Guard in Account settings under Security, then confirm your email address to activate it.
  • Email-based Steam Guard is the default option and requires no extra software beyond your regular email account.
  • The mobile authenticator app generates codes on your phone instead of sending emails, and is optional but recommended if you log in from many devices.

How to enable Steam Guard through email

Open Steam on your computer or visit steampowered.com and log in. Click your account name in the top right corner and select Account details. On the left side, click Security. Under the Steam Guard section, you will see a toggle or button to turn it on — click it.

Steam will ask you to confirm your email address. Check your inbox for a message from Steam Support with the subject line "Confirm your email address for Steam Guard". Click the link in that email or copy the code and paste it into Steam. Once confirmed, Steam Guard is active. The next time you log in from a different computer or browser, Steam will email you a code to enter before you can access your account.

What happens when Steam Guard is on

When you log in from a device Steam has not seen before, it sends a six-digit code to your registered email address. You have 24 hours to enter that code. If you log in from the same device again within a few weeks, Steam remembers it and does not ask for a code — you only need the code for new devices or after a long gap.

If someone tries to log into your account from another location, they will be stuck at the code screen. They cannot proceed without access to your email. This is why Steam Guard works: even if a password is leaked, the attacker cannot get in without your email account as well.

Setting up the mobile authenticator app (optional)

The Steam mobile authenticator app generates codes on your phone instead of relying on email. Download the official Steam app from Google Play or the Apple App Store, log in with your Steam account, and go to Settings > Account security. Tap Set up authenticator and follow the on-screen steps. The app will show a new six-digit code every 30 seconds.

The authenticator app is useful if you log in from many different devices or travel frequently, because you always have a code available without waiting for an email. However, if you lose access to your phone or uninstall the app, you will need to contact Steam Support to regain access to your account. For most players, email-based Steam Guard is simpler and sufficient.

What to do if you lose access to your email or phone

If you can no longer receive emails at the address linked to your Steam account, you can change it in Account details > Contact information. Enter your new email address and Steam will send a confirmation link to both the old and new addresses. Click the link on the new address to complete the change.

If you set up the mobile authenticator and then lose your phone, you cannot log in without a recovery code. Steam provides recovery codes when you first set up the authenticator — write these down or store them somewhere safe. If you did not save them, contact Steam Support with proof of account ownership and they can disable the authenticator for you. This process can take several days.

Common issues and how to fix them

If you do not receive a Steam Guard email, check your spam or junk folder first — sometimes the email gets filtered. If it is not there, go back to Account details > Security and click "Resend code". Wait a few minutes for a new email to arrive. If you still do not receive it, make sure your email address in Steam is correct by checking Contact information.

If you enter a code and Steam says it is invalid, the code may have expired — Steam Guard codes only work for 24 hours. Request a new code and try again. If you are using the authenticator app and codes are not working, make sure your phone's date and time are set correctly, because the app relies on accurate time to generate valid codes.

Frequently Asked Questions

Do I have to use Steam Guard?

Steam Guard is not required, but Valve strongly recommends it. Without it, anyone who learns your password can access your account and your games. With Steam Guard on, they would also need your email account, which is much harder to compromise.

Will Steam Guard slow down my login?

The first time you log in on a new device, you will wait for an email and enter a code — this adds about one minute. After that, Steam remembers the device and you log in normally. If you use the authenticator app, you just look at your phone and enter the code, which takes about 10 seconds.

Can I use Steam Guard on multiple devices?

Yes. Steam Guard works the same way on every device — you get a code when you log in from somewhere new. You can use the same email address or authenticator app across all your devices. Steam will recognize devices you use regularly and stop asking for codes on those.

What if I share a computer with someone else?

If you both use the same computer, Steam Guard will ask for a code the first time each of you logs in. After that, Steam remembers each account on that device. You can also use Steam's offline mode to play games without logging in, though you will need to log in once every few weeks to stay offline.

Can I turn off Steam Guard after I turn it on?

Yes. Go to Account details > Security and toggle Steam Guard off. Steam will ask you to confirm by sending a code to your email. Enter the code and Steam Guard is disabled. You can turn it back on anytime using the same process.