The `we couldn't install a required dependency` error in Valorant commonly arises when there are problems with the Riot Vanguard anti-cheat system or the installation files. Below are some actions you can undertake to resolve this error [1][4][5][6]:
1. Run Valorant as Administrator:
* Right-click on the Valorant shortcut or the `Valorant.exe` file.
* Select `Run as administrator` from the context menu.
* This can help ensure that Valorant has the necessary permissions to install required dependencies.
2. Restart Your Computer:
* Sometimes, a simple restart can resolve installation issues. Close all running applications and restart your computer before launching Valorant again.
3. Repair Riot Vanguard: Riot Vanguard is the anti-cheat system used in Valorant. Sometimes, repairing or reinstalling Riot Vanguard can resolve issues.
* Navigate to the `Add or Remove Programs` or `Programs and Features` in your Windows settings.
* Find `Riot Vanguard` and click on it.
* Choose the option to repair or uninstall.
* Follow the on-screen instructions to repair Riot Vanguard.
4. Check Your Internet Connection:
* A stable and fast internet connection is essential for downloading and installing updates and dependencies. Ensure that your internet connection is not experiencing issues.
5. Update Graphics Drivers:
* Outdated or corrupted graphics drivers can cause installation issues. Make sure your graphics drivers are up to date. Visit your graphics card manufacturer's website (e.g., NVIDIA or AMD) to download and install the latest drivers.
6. Temporarily Disable Third-party Antivirus/Firewall:
* Sometimes, third-party antivirus or firewall software can interfere with game installations. Temporarily disable your antivirus or firewall and try installing Valorant again. Remember to re-enable them after installation.
7. Check Disk Space:
* Ensure that you have enough free disk space to install Valorant and any required updates. Clear some space if your disk is nearly full.
8. Verify Game Files: If you have already installed Valorant, you can try verifying the game files to ensure they are not corrupted.
* Open the Riot Games Launcher.
* Click on Valorant.
* Click on the ``...`` icon next to the `Play` button.
* Select `Settings`.
* Under the `General` tab, click on `Check` in the `VALORANT` section to verify game files.
9. Reinstall Valorant:
* If none of the above steps work, you may need to uninstall Valorant and then reinstall it from scratch.
10. Contact Valorant Support:
* If you have tried all the above steps and the issue persists, it is a good idea to contact Valorant support for further assistance. They may be able to provide specific guidance or solutions based on your system and error message.

Remember that making changes to your computer's settings and files carries some risk, so proceed with caution and back up important data when necessary.