What a Steam Family Library Actually Does
A Steam Family is Valve's system for sharing games between people who live in the same house. When you set one up, household members can play games from your library on their own accounts without buying them again — but only on computers in your home, and only one person at a time per game.
The system has two parts. Family Library Sharing lets you authorize a computer so that anyone with an account on that machine can play your games. Steam Remote Play Together is separate and lets people play together online, but that is a different feature. This guide covers the sharing part, which is what most people mean when they say "Steam Family."
The catch: if someone is playing a game from your library, you cannot play it at the same time on a different computer. Steam will kick one of you off. This matters if you have multiple people in the house who want to play the same game together.
Key Takeaways
- Family Library Sharing requires you to authorize a computer and mark it as your primary device, then other household members can play your games on that machine.
- Only one person can play a game from your library at a time, even if multiple people own accounts on the same computer.
- You can authorize up to ten computers, but only one can be marked as your primary device at a time.
- The person whose account owns the games must be logged in at least once on the authorized computer for the sharing to work.
- If you change your Steam password, all authorized computers are logged out and you must re-authorize them.
Setting Up Family Library Sharing on Your Computer
Start by opening Steam on the computer where you want to share games. Log in with the account that owns the games you want to share. Click your username in the top right corner and select Settings.
In the Settings window, click Family on the left side. You will see a section called Family Library Sharing with a toggle switch. Turn it on. Steam will ask you to confirm — click the button to enable it.
Next, you need to mark this computer as your primary device. In the same Settings window, click Remote Play on the left side. You will see an option that says Authorize computers running Steam or similar wording. Click it, then find the current computer in the list and select Authorize. After that, go back to the Family section and look for an option to set this as your primary computer — the exact wording changes with Steam updates, but it will be near the Family Library Sharing toggle.
Once you have turned on Family Library Sharing and authorized the computer, log out of your account. Other household members can now log into their own accounts on that same computer and see your games in their library.
What Household Members Need to Do
Each person who wants to play your games needs their own Steam account. They do not need to buy anything or enter payment information — they just need an account name and password.
On the authorized computer, they should log in with their own account. When they open Steam, they will see your games listed in their library under a section labeled with your account name, like "Games from [Your Name]'s Library." They can click any game and launch it just as if they owned it.
The first time they play a game from your library, Steam may ask them to authorize the computer. This is normal — they just click the button to confirm. After that, they can play without extra steps.
Important Limits and Rules
Steam enforces one rule strictly: only one person can play a game from your library at the same time. If you are playing Baldur's Gate 3 on your account, nobody else can launch it on any other computer, even if they have their own account. If someone tries, Steam will show an error message saying the game is in use.
This is different from games you each own separately — if you both bought Baldur's Gate 3, you can both play it at the same time. But if only you bought it and they are playing from your library, only one of you can be in the game.
You can authorize up to ten computers total, but only one can be your primary device. If you authorize a computer at a friend's house or at work, you can still play your games there, but other people on that computer cannot — only the primary device allows other accounts to access your library.
What Happens If You Change Your Password
If you change your Steam password for security reasons, Steam automatically logs out all authorized computers. This is a safety feature — it prevents someone from accessing your account on a computer you no longer control.
When this happens, you will need to log back in on the primary computer with your new password. After you do, Family Library Sharing will work again. Other household members do not need to do anything — they just stay logged into their own accounts.
If you forget to log back in after a password change, household members will see your games in their library, but they will get an error when they try to launch them. The fix is straightforward: log in with your account on that computer once, then log back out.
Troubleshooting Common Problems
If household members cannot see your games in their library, the most common cause is that Family Library Sharing is not actually turned on. Go back to Settings > Family and check that the toggle is switched on. The second most common cause is that you have not logged into your account on that computer yet — Steam needs to see your account at least once for sharing to work.
If games launch but when ready close with an error, check whether you are logged into your account somewhere else. If you are playing a game on your laptop while someone else tries to play the same game on the desktop, Steam will kick one of you off. The person who started playing first stays in the game; the second person gets an error.
If you authorized a computer but it is not showing up in your list of authorized devices, restart Steam on that computer and try again. Sometimes the authorization takes a few minutes to sync across Steam's servers.
Frequently Asked Questions
Can I share games with people who do not live with me?
Technically you can authorize a computer anywhere, but Steam's terms say Family Library Sharing is only for household members. If you authorize a computer at a friend's house, only you can play your games there — not them. The system is designed for people in the same home.
What if someone else in my house buys a game? Can I play it?
Only if they set up Family Library Sharing on their account and authorize the same computer. Then you would see their games in your library the same way they see yours. Each person's games are shared separately.
Do I need to buy multiple copies of a game for multiple people?
No, but only one person can play it at a time. If you want two household members to play the same game simultaneously, you would need to buy it twice — once for each account. Otherwise, you are taking turns.
What if I want to play my games on a different computer?
You can authorize up to ten computers. Log into your account on the new computer and turn on Family Library Sharing there too. You can mark only one as your primary device, but you can still play your own games on any authorized computer by logging in with your account.
Does Family Library Sharing work on Steam Deck?
Yes. You can authorize a Steam Deck as a primary device and other household members can play your games on it. The same one-game-at-a-time rule applies.