Valorant “Not Available on Your OS” Error: Fixes

Updated 9 November 2026 · Standard formula, shown below

The “This game is not available on your operating system” message in Valorant usually means the Riot client or the game’s compatibility checks do not recognize your Windows setup as supported. Check that you are using a supported 64-bit version of Windows, then update Windows and the Riot client before trying a clean reinstall.

What the error means

Valorant is a Windows game, and it depends on more than the game files alone. The Riot Client launches it, while Riot Vanguard—the game’s anti-cheat software—must also install and run. If one of these components sees an unsupported operating system, an incomplete update, or damaged installation files, the client may refuse to launch and show a compatibility message.

The wording can be confusing: it does not necessarily mean that your computer is too old or that Valorant has been discontinued. It can appear when the installed Windows edition, architecture, or update state does not meet the game’s current requirements, or when the launcher is reading outdated or corrupted installation data. The exact cause cannot be identified from that message alone.

Check Windows compatibility first

Valorant is designed for Windows PCs; it does not have a native macOS or Linux version. Running a Windows game through a compatibility layer or virtual machine is not an officially supported substitute, and Vanguard may not work in those environments. If you are on a Mac or Linux computer, changing the Riot Client settings will not turn the game into a supported native app.

On a Windows PC, check the version and system type before reinstalling:

Open Settings and select System, then About.
Under Windows specifications, note the edition, version, and OS build. Under Device specifications, check System type for a 64-bit operating system.
Open Settings > Windows Update, select Check for updates, and install applicable updates. Restart if Windows requests it.

Windows 11 users should also confirm that their PC meets Microsoft’s Windows 11 requirements. Some Vanguard startup requirements can depend on Windows version and system configuration. Do not change firmware security settings just because this particular operating-system message appears; first check Riot’s current support guidance for your Windows version and the exact warning shown.

Try these fixes in order

After confirming that Windows is supported, work through these steps one at a time. Restart the computer after updates or installation changes, since Vanguard’s service may not initialize until a restart.

Restart Windows. A restart clears a pending update or installer operation that can prevent the client from detecting the current setup correctly.
Update the Riot Client and Valorant. Open the client normally and let any available game or client update finish. Avoid ending the update process midway.
Run the client with appropriate permissions. Close the client, right-click its shortcut, and choose Run as administrator for a test. Do not permanently change permissions on unrelated system folders.
Repair or reinstall from the official client. If the launcher offers a repair option, use it. Otherwise, uninstall Valorant and the Riot Client through Windows’ installed-app controls, restart, and download the installer from Riot’s official website.
Check security software interference. Review any security notification that may have blocked or quarantined a Riot component. Only allow software obtained from Riot’s official source; do not disable protection broadly or download replacement files from third-party sites.

Vanguard and system requirements

Vanguard is not simply a game setting: it includes a component that starts with Windows and a service used while playing. A failed Vanguard installation or a service that did not start can cause launch problems, although the operating-system message alone does not prove Vanguard is the cause. If the client gives a separate Vanguard notice, follow the instructions for that notice and restart when prompted.

Do not assume that every launch issue calls for enabling Secure Boot or TPM. Those settings are relevant to particular Windows configurations and Vanguard requirements, but their availability depends on the PC’s hardware and firmware. If Riot’s current instructions say a requirement applies to your case, check your computer or motherboard manufacturer’s documentation before changing firmware settings. Incorrect firmware changes can prevent Windows from starting normally.

If the message persists

If you have a supported, updated 64-bit Windows installation and the error continues after a clean installation, collect details before contacting support. Note your Windows edition and version, whether Windows Update reports pending updates, when the message appears, and any separate Riot Client or Vanguard message. A screenshot can help distinguish an operating-system compatibility notice from a different launch error.

Contact Riot Player Support through its official support site and provide those details. Do not post account passwords, verification codes, or other private account information. Avoid unofficial “fix” tools, modified launchers, and instructions to bypass Vanguard: they can put your files or account at risk and may not solve the underlying compatibility problem.

Frequently Asked Questions

Can I play Valorant on Mac or Linux?
Valorant does not offer a native Mac or Linux version. Compatibility layers and virtual machines are not supported ways to run the game, and Vanguard may prevent them from working.

Does this error mean my PC is too old?
Not necessarily. It can reflect an unsupported Windows version or architecture, outdated software, or damaged client files. Check Windows specifications and updates before concluding that the hardware is incompatible.

Will reinstalling Valorant always fix the error?
No. Reinstalling can repair damaged game or client files, but it will not make an unsupported operating system compatible. Confirm the Windows requirements first.

Should I enable Secure Boot to fix this message?
Not automatically. Secure Boot requirements depend on the specific Windows setup and the notice Riot shows. Check Riot’s current guidance for your case before changing firmware settings.

Is the Riot Client the same as Vanguard?
No. The Riot Client manages and launches the game; Vanguard is Riot’s anti-cheat software, with components that must be installed and running for Valorant to play.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.