Fix Valorant Unable to Start Error

Valorant players frequently encounter launch issues where the game fails to start properly, displaying errors like “the application was unable to start correctly (0xc0000005)” or similar codes such as 0xc0000142. These problems often stem from corrupted system files, conflicts with antivirus software, Vanguard anti-cheat service disruptions, or Riot client glitches. This guide provides a structured approach to diagnose and resolve these errors, drawing from official Riot support and community-tested methods to get you back into matches quickly.

Understanding Common Launch Errors in Valorant

The **0xc0000005** error typically indicates an access violation or blocked executable, often due to antivirus interference or missing permissions. Similarly, **0xc0000142** points to faulty system files or DLL issues. These are not unique to Valorant but common in competitive games relying on kernel-level anti-cheat like Vanguard. Riot’s Patch updates can exacerbate these if they alter file permissions or Vanguard behaviors.

Symptoms include the Riot Client opening but Valorant crashing immediately, or no response at all. Factors like outdated drivers, Windows updates, or third-party overlays contribute. Before diving into fixes, note your exact error code via Windows Event Viewer (search “Event Viewer” > Windows Logs > Application) for targeted troubleshooting.

Initial Quick Checks and Preparations

Start with these non-invasive steps to rule out simple causes:

• Restart your PC: Closes lingering processes like Vanguard or Riot Client that may conflict.
• Update Windows: Go to Settings > Update & Security > Windows Update. Pending updates often resolve compatibility issues.
• Run as Administrator: Right-click Valorant.exe (in Riot Games folder) > Properties > Compatibility > Check “Run this program as an administrator.”
• Close Overlays: Disable Discord, NVIDIA GeForce Experience, or MSI Afterburner overlays via their settings.

If these don’t work, proceed to advanced repairs. Always create a system restore point first: Search “Create a restore point” in Start menu.

Repair Riot Client and Game Files

The Riot Client manages Valorant launches, so repairing it is crucial. Here’s how:

1. Open Riot Client > Profile icon (top-right) > Settings.
2. Select **Valorant** > Click **Repair** (or Initiate Full Repair for deeper scan).
3. Wait 5-15 minutes; this verifies and redownloads corrupted shaders/files.

For stubborn cases, uninstall/reinstall via Riot Client: Settings > Valorant > Uninstall, then reinstall from playvalorant.com. This preserves your account progress.

Fix Vanguard Anti-Cheat Service

Vanguard (vgc service) runs at kernel level and must start automatically. Errors often occur if it’s stopped or manual.

1. Press Win + R > type services.msc > Enter.
2. Find **vgc** > Right-click > Properties.
3. Set **Startup type** to **Automatic** > Click **Start** if stopped > Apply > OK.
4. Repeat for **vgtray** if listed.

Next, in System Configuration:

1. Search **msconfig** > Services tab > Check “Hide all Microsoft services.”
2. Ensure **vgc** is enabled > Apply > Restart.

If Vanguard is missing, reinstall: Run Command Prompt as admin > sc create vgc ... VanguardSetup.exe /install (download from Riot support).

Resolve System File Corruption

Corrupted Windows files trigger many launch errors. Use built-in tools:

1. Right-click Start > **Windows Terminal (Admin)** or CMD (Admin).
2. Run: sfc /scannow (scans/repairs system files; ~10-20 mins).
3. Then: DISM /Online /Cleanup-Image /RestoreHealth (repairs DISM image; may take 30+ mins, appears stuck but continues).
4. Restart PC.

These commands have fixed 0xc0000142 for many users by restoring DLLs Valorant needs.

Handle Antivirus and Firewall Conflicts

Antivirus often flags Vanguard as malware, causing blocks.

• Add Exceptions: In Windows Defender: Virus & threat protection > Exclusions > Add folders for Riot Games, Vanguard (C:\Program Files\Riot Vanguard).
• Disable Temporarily: Turn off real-time protection > Test launch > Re-enable. If fixed, add permanent exclusions.
• Third-Party AV (e.g., Norton, Avast): Whitelist Valorant.exe, RiotClientServices.exe, vgtray.exe.

For Firewall: Settings > Update & Security > Windows Security > Firewall & network protection > Allow app through firewall > Add Riot/Vanguard exes.

Address Executable Blocks and Permissions

Downloaded files may be “blocked.”

1. Navigate to Valorant.exe (Start > Valorant > Open file location).
2. Right-click > Properties > General tab > Check “Unblock” if present > Apply.
3. Also: Compatibility > Disable fullscreen optimizations > Run as admin.

Clear Riot cache: %localappdata%\Riot Games > Delete Riot Client folder (backup first).

Update Drivers and Hardware Checks

Outdated GPU drivers cause crashes:

• NVIDIA/AMD/Intel: Use GeForce Experience, AMD Software, or Intel Driver Assistant for latest drivers.
• Check Device Manager > Display adapters for errors (yellow !).

Run hardware diagnostics: Search “mdsched” for RAM test; “chkdsk C: /f /r” for disk errors (schedule on restart).

Advanced Troubleshooting for Persistent Issues

If basics fail:

• Clean Boot: msconfig > Services (hide Microsoft) > Disable all > Startup (Task Manager) disable non-essentials > Restart > Test.
• Reinstall Vanguard: CMD admin: sc delete vgc > Restart > Run Vanguard installer.
• Windows Reset: Settings > Recovery > Reset this PC (keep files).

FAQs

Q: Why does Valorant crash with 0xc0000005 after updates?
A: Updates can trigger antivirus flags or service changes; repair client and add exclusions first.

Q: Is Vanguard safe? Can I uninstall it?
A: Essential for anti-cheat; uninstall via VanguardSetup.exe /uninstall, but reinstall for play.

Q: Error persists after all steps?
A: Submit Riot support ticket with dxdiag.txt (Run dxdiag > Save info).

Q: Does this affect competitive play?
A: Yes, Vanguard must run; fixes ensure kernel-level security.

Q: Safe to disable antivirus?
A: Temporary only; always add exceptions instead.

Prevention Tips for Future Stability

Maintain smooth launches:

• Regularly repair via Riot Client.
• Keep Windows/Drivers updated.
• Exclude game folders in AV from day one.
• Avoid unofficial Vanguard tweaks.

Monitor Riot status page for outages. These steps resolve 90%+ of cases based on community reports.