To install Steam on Windows 10 or 11, download the official installer from store.steampowered.com/about, run SteamSetup.exe, click through the wizard accepting the defaults, and either sign in with an existing Steam account or create a free one when the client launches. The whole process takes about five minutes on a normal connection.
Applies to: Windows 10 (22H2) and Windows 11 (23H2, 24H2, 25H2) | Last updated: May 4, 2026
Key Takeaways
- Steam is free — the client and the account both cost nothing; you only pay for the games you choose to buy
- The installer is about 4 MB, but the initial Steam install plus first-launch update uses roughly 1 GB of disk space before any games
- Always download from
store.steampowered.com— the file is namedSteamSetup.exe; anything else is a fake - Steam runs on Windows 10 (64-bit) and Windows 11 — the installation steps are identical on both
- Pick a drive with plenty of free space — modern games are 50-150 GB each, and the default install path is on the C: drive
Quick Steps
- Open a browser and go to store.steampowered.com/about
- Click the blue Install Steam button to download
SteamSetup.exe - Run the installer and accept the User Account Control prompt
- Click Next, pick your language, and click Install (default location is fine for most people)
- Leave Run Steam ticked and click Finish
- Wait for the first-launch update to finish
- Sign in with an existing Steam account, or click Create a Free Account at the bottom of the login window
Download the Steam Installer from the Official Site
Open your browser and go to the official Steam website. On the homepage, look at the top-right corner for the Install Steam link. Click it, and the next page shows a large blue Install Steam button — click that to start the download. Your browser will save a small file called SteamSetup.exe (around 4 MB).
Tip: Only download Steam from
store.steampowered.com. Random “Steam download” links from search results can lead to malware-laced installers that look identical to the real thing. If the URL is not Steampowered, do not run the file.
Run the Installer and Walk Through the Setup Wizard
Once SteamSetup.exe finishes downloading, open it from your browser’s downloads bar or your Downloads folder. Windows will show a User Account Control prompt asking for permission — click Yes to continue. The Steam Setup Wizard launches a moment later.
Click Next on the welcome screen, choose your preferred language, and click Next again. The wizard then asks where to install Steam. The default path is C:\Program Files (x86)\Steam, which is fine for most people. If your C: drive is small or low on space, click Browse and pick a folder on a larger drive instead.
Click Install. The installer copies the core Steam files to your computer in under a minute. When it finishes, leave the Run Steam checkbox ticked and click Finish.
Note: Game libraries can live on a different drive than the Steam client. Even if you install Steam on C:, you can add a separate library folder on a larger drive later from Steam > Settings > Storage > +. Pick a drive with at least 500 GB free if you plan on installing modern AAA games.
Sign In or Create a Free Steam Account
The first time Steam launches, it pulls down the latest client update. This usually takes 30 seconds to a couple of minutes depending on your connection — let it finish before you do anything else.
Once the update completes, the sign-in window appears. If you already have a Steam account, type your username and password and click Sign in. If you have the Steam mobile app installed, the QR code on the right is the fastest way in — open the app, tap the QR scanner icon, and point your phone at the screen.
If you do not have an account yet, click Create a Free Account at the bottom of the login window. Fill in your email address, country, and a strong password, agree to the Steam Subscriber Agreement, and click Continue. Steam emails you a verification code — enter it, pick a username, and you are signed in.
Tip: Turn on Steam Guard from the start. After your first sign-in, Steam will offer to enable two-factor authentication via the mobile app — say yes. Steam accounts are valuable targets, and Steam Guard blocks the vast majority of phishing and credential-stuffing attacks I have seen happen to friends.
After Steam Is Installed
Once you are signed in, the Steam library opens. From here you can browse the store, install games you already own, and add friends. If this is a fresh PC build, this is also a good time to look at a few related guides:
- The best RAM for gaming — what to look for if you are upgrading
- The best SSDs for upgrading or replacing your drive — game libraries fill drives fast
- Winhance — my own free utility for debloating and optimizing Windows 11 for gaming
- How to download and install Counter-Strike 2 — once Steam is in, here is a popular first install
Frequently Asked Questions
Is Steam free to download and use?
Yes. Both the Steam client and a Steam account are completely free. You can browse the store, chat with friends, watch broadcasts, and install free-to-play games like Counter-Strike 2, Dota 2, and Apex Legends without paying anything. You only spend money when you buy a paid game.
Does Steam work on Windows 10 and Windows 11?
Yes. Steam supports 64-bit Windows 10 (22H2) and all current versions of Windows 11 (23H2, 24H2, 25H2). The installation process is identical on both. Steam dropped support for 32-bit Windows and for Windows 7 and 8.1 at the start of 2024, so you need a 64-bit Windows 10 or 11 installation.
How much disk space does Steam use?
The Steam client itself takes around 1 GB after the first-launch update. Games are installed separately and can range from a few hundred megabytes for indie titles up to 150 GB or more for modern AAA games. If you plan on building a real library, an SSD with at least 1 TB of free space is a sensible target.
What should I do if Steam will not open after installation?
Restart the PC first — that fixes most first-launch issues caused by the installer not finishing cleanly. If Steam still does not open, right-click the Steam shortcut and choose Run as administrator. If that fails, uninstall Steam from Settings > Apps > Installed apps, reboot, and reinstall using a fresh SteamSetup.exe downloaded from store.steampowered.com.
Can I move my Steam install to a different drive later?
Yes. Open Steam, go to Steam > Settings > Storage, click the + button to add a new library folder on another drive, then right-click any installed game and choose Properties > Installed Files > Move install folder. The Steam client itself stays where it was installed, but games can live anywhere.
