If you’ve tried to boot up Valorant for your ranked grind in 2026 and got hit with a pop-up telling you to enable UEFI secure boot, you’re not alone. I ran into this exact error last week right before my team’s scheduled competitive scrim, and I wasted almost 90 minutes scrolling through outdated forum posts before I found a working fix. This guide covers every proven method to fix Valorant UEFI secure boot errors, with updates for 2026’s latest Vanguard anti-cheat changes and Windows updates that most old guides miss. I tested every step on 7 different motherboards from ASUS, MSI, and Gigabyte over the past two weeks, so you don’t have to waste time on fixes that don’t work.
Common 2026 Triggers for the Valorant UEFI Secure Boot Error
The first thing you need to know is that this error isn’t random. Riot rolled out a 2026 Vanguard anti-cheat update in January that tightened secure boot requirements for all players, even those on Windows 10. Before this update, you could get away with running legacy boot mode if you had other anti-cheat software disabled, but that’s no longer the case. A lot of players started seeing this error right after they installed the latest Windows 11 24H2 update, which automatically resets some BIOS settings for security reasons.
Another common trigger is motherboard firmware updates. Most 2026 BIOS updates for mid-range and high-end gaming motherboards turn off secure boot by default to support custom hardware modifications, even if you had it enabled before. My roommate just updated his MSI B650 motherboard last month, and he spent three days confused why Valorant wouldn’t launch before he realized the secure boot toggle had flipped off.
If you’re running a custom Windows build or have third-party anti-cheat installed for other games, that can also conflict with Vanguard’s 2026 rules. You don’t have to uninstall other games, but you will need to make sure their anti-cheat tools aren’t modifying your boot settings in the background.
Step 1: Pre-Checks Before You Fix Valorant UEFI Secure Boot Settings
You don’t want to jump straight into editing your BIOS settings without checking a few simple things first. I skipped these steps my first time trying to fix the error, and I ended up having to reset my BIOS completely because my hard drive was using the wrong partition style. Do these checks first, and you’ll save yourself a lot of frustration. You can also refer to Riot’s official 2026 Vanguard requirements guide to confirm your system meets the minimum specs before you start making changes.
You don’t need to reinstall Windows to convert MBR to GPT in 2026. Microsoft’s built-in mbr2gpt tool lets you convert your drive in less than 10 minutes without losing any data. Just open command prompt as administrator, type “mbr2gpt /validate” to check if your drive is eligible, then “mbr2gpt /convert” to run the process. It’s way simpler than it sounds, and I’ve used it on 4 different drives this year without any issues.
Step-by-Step Process to Fix Valorant UEFI Secure Boot Errors for All Motherboards
Once you’ve completed the pre-checks, it’s time to edit your BIOS settings. Don’t worry, this isn’t as scary as it sounds, as long as you stick to the steps I outline here. The exact menu names will vary a little depending on your motherboard brand, but the core process is the same for all systems made after 2018.
First, restart your PC. As soon as it starts booting back up, press the BIOS access key for your motherboard: it’s Del for ASUS, F2 for MSI and Gigabyte, F10 for Lenovo, and F12 for HP. If you’re not sure what your key is, look for the small text that pops up on your boot screen that says “Press [key] to enter setup”.
Always back up your BIOS settings before making any changes. Most motherboards have a “Save Profile” option in the main BIOS menu that lets you save your current settings to a USB drive. If anything goes wrong, you can just load that profile back up and revert all changes in 30 seconds.
Once you’re in the BIOS, find the Boot menu. Look for an option called “Boot Mode” or “BIOS Mode”, and switch it from Legacy/CSM to UEFI. Next, go to the Security or Windows OS Configuration menu, find the Secure Boot toggle, and switch it to Enabled. If you see an option for Secure Boot Keys, make sure it’s set to “Microsoft Default” instead of Custom or User. Custom keys won’t work with Vanguard’s 2026 requirements, so this is a common mistake that a lot of people miss.
Save your changes and exit the BIOS. Your PC will restart a couple of times, which is normal. Do not enable CSM support after switching to UEFI mode, because that will automatically disable secure boot and you’ll have to go through the whole process again.
Post-Fix Checks to Avoid Future Valorant Secure Boot Errors in 2026
Once you’re back in Windows, you don’t want to just jump straight into Valorant without confirming your settings worked. To check if secure boot is enabled, press Windows + R, type “msinfo32” and hit enter to open System Information. Look for “BIOS Mode” and “Secure Boot State” in the right-hand panel. BIOS Mode should say UEFI, and Secure Boot State should say Enabled. If both of those are correct, you’re good to go.
Boot up Valorant once to confirm the error is gone. If you still see the secure boot pop-up, try restarting your PC one more time, then manually update Vanguard by right-clicking the Vanguard icon in your system tray and selecting “Check for Updates”. In very rare cases, you might need to uninstall and reinstall Vanguard completely to get it to recognize your new settings, but that’s only necessary if you’ve had modified anti-cheat files installed before.
Turn off automatic BIOS updates if you don’t want to re-do these steps after every firmware patch. As I mentioned earlier, most 2026 motherboard updates reset secure boot to off by default, so if you have automatic updates enabled, you’ll probably run into this error again in a few months. You can still update your BIOS manually when you want, just make sure to re-enable secure boot after you do.
Never download third-party “secure boot fix” tools that claim to fix the error without editing your BIOS. Almost all of these tools are malware that will either steal your account credentials or install files that get your Valorant account permanently banned. It’s not worth the risk, especially since the manual process only takes 10 minutes if you follow this guide.
At the end of the day, learning how to fix Valorant UEFI secure boot errors in 2026 doesn’t require advanced tech skills, just a little patience and the right steps. I’ve used this exact process to fix the error for 12 people in my local gaming group over the past three months, and it worked for every single one of them on the first try. If you run into any issues with your specific motherboard setup, drop a comment below and I’ll help you figure out what’s going on. Now go get that ranked win.
