VAN -81: Vanguard dropped out during launch or a match

Connection Error: VALORANT has encountered a connection error. Please relaunch the client to reconnect. Error Code: VAN -81

Why a League player sees VALORANT's name

Riot writes one article per Vanguard code and serves it to both games, and the line it prints for VAN -81 is VALORANT's reconnect prompt. If League threw -81 at you, you're in the right place. Riot's explanation is broad: Vanguard couldn't start, stay connected or confirm the PC was ready, and that can happen at launch or halfway through a game.

Riot gives six other negative codes the same explanation and the same seven steps in the same order, and it hasn't published anything that tells -81 apart from them. Whichever of the seven you got, you're working one list.

The restart has to be a real one

Step one is a PC restart, and it comes back inside step four, since reinstalling Vanguard means uninstall, restart, then launch so the client can put it back. The best player account of -81 we found hinges on that second restart. The player was getting -81 in VALORANT and VAN 57 in League on the same PC. After Vanguard reinstalled, the Riot Client said Play was ready without asking for a reboot, and pressing it just set off another reinstall. Restarting by hand, unprompted, broke the loop, because Vanguard's driver only loads while Windows boots.

So if you reach step four, reboot after the reinstall even when nothing asks you to. The rest of that write-up, including a much rarer driver problem, is on our VAN 57 page.

Riot's fix, in Riot's order

1. Restart your PC

   A full restart, not a sign-out. Vanguard's driver loads when Windows boots, so a restart is the only thing that gives it a clean start.

2. Check the date, time and time zone

   A clock that's off breaks the secure connections Vanguard makes on launch. In Settings, under Time & language, turn on Set time automatically and Set time zone automatically, then hit Sync now.

3. Set the vgc service to Automatic

   Vanguard has two parts: a driver that loads at boot and a Windows service called vgc. If the service isn't running when you press Play, the game closes.

   1. Press Win+R, type services.msc and press Enter.
   2. Find vgc in the list and double-click it.
   3. Set Startup type to Automatic. If the status says Stopped, click Start.
   4. Apply, OK, then restart the PC.

   The exception is Vanguard Pre-Check, Riot's opt-in mode where Vanguard only runs while a game is open. It needs Windows 11 25H2 or newer plus Secure Boot, TPM 2.0, IOMMU, VBS and HVCI, and if you're on it you shouldn't force the service to Automatic.

   Riot's guide: Set the vgc service to Automatic

4. Uninstall Vanguard, restart, and let the game reinstall it

   1. Close the game and exit the Riot Client from the system tray.
   2. Right-click the red Vanguard icon in the tray, choose Advanced, then Uninstall Vanguard. If the icon isn't there, search Windows for Add or remove programs and uninstall Riot Vanguard from the list.
   3. Restart the PC. Vanguard is gone if its tray icon doesn't come back.
   4. Open the Riot Client and launch the game. It reinstalls Vanguard and will ask for one more restart before Play unlocks.

   Riot's guide: Uninstall Vanguard, restart, and let the game reinstall it

5. Do a clean boot

   This switches off every non-Microsoft service for one boot, so you can tell whether something in the background is the problem.

   1. Press Win+R, type msconfig and press Enter.
   2. On the Services tab, tick Hide all Microsoft services first (skip it and you'll switch off parts of Windows).
   3. Click Disable all, then tick vgc again so Vanguard still starts.
   4. Apply, OK, restart, and test.

   Some programs ignore a clean boot anyway, third-party antivirus and networking tools most of all. If the error goes away, turn services back on a few at a time until it returns, and you've found it.

   Riot's guide: Do a clean boot

6. Reinstall the game

   Uninstall from Windows' Installed apps list with the Riot Client closed. For a clean reinstall of League, Riot also has you delete the Riot Client folder under C:\Riot Games, the Riot Games folders under %localappdata% and %programdata%, and the League of Legends folder in Documents. That last one holds your replays, so copy them out first if you want them.

   Riot's guide: Reinstall the game

7. Work through Riot's connection checklist

   Last on Riot's list for a reason: only get here once the Vanguard steps above have failed. Riot's PC connection guide covers the usual suspects: a wired connection instead of Wi-Fi, restarting the router, switching to a public DNS, firewall exceptions for the Riot Client and game, and turning off VPNs.

   Riot's guide: Work through Riot's connection checklist

Related errors

• VAN 57
• VAN -79
• VAN -102
• VAN -83
• VAN -92
• VAN -72
• VAN -104

Source: Riot Games Player Support, Error VAN -81, updated July 10, 2026. Riot's steps are paraphrased here, not copied; checked September 25, 2026.