This could be caused by an inaccurate clock or bad timezone settings on your device. If your time settings are correct, it could be that a different device has been set up to provide the Steam Guard codes for your account, which means the authenticator on this device is no longer valid.
Do I need Steam Mobile authenticator to trade?
Trade and market holds are no longer necessary when you protect your account with a Steam Guard Mobile Authenticator. Using a physical device (your smartphone) to confirm item transactions ensures that you and only you can quickly and securely trade or sell your items.
Is Steam Mobile authenticator safe?
Since you’re the only one with access to the temporary codes generated by Steam Guard, nobody can steal your account. Even if they obtain your password, they can’t log in. The Steam Guard mobile authenticator is more secure since a thief would need your phone in their physical possession to break into your account.
Do I need Steam mobile Authenticator to trade?
Why is my Steam Guard mobile authenticator not working?
Check the time on your phone and make sure it is accurate. The authenticator codes are generated using the phone’s time, and if the time is off, the codes will be incorrect. If you have more than one account with an authenticator, make sure you are entering codes for the correct account.
Can you transfer your steam authenticator to a new phone?
Yes, you can. To transfer your authenticator to a new phone, you’ll need access to the phone number associated with your account (so we can send you a text message to confirm it’s you). From the Steam Mobile app on your new device, try to log into your account.
How often do you need to enter steam authenticator code?
The authenticator generates a code that you need to enter every time that you log on to your Steam account. The code changes every 30 seconds, can be used only once, and is unguessable.
What happens if you enter the wrong code on Steam mobile?
The authenticator codes are generated using the phone’s time, and if the time is off, the codes will be incorrect. If you have more than one account with an authenticator, make sure you are entering codes for the correct account. You can remove the authenticator from the account; see the section below on authenticator recovery.
