Riot reportedly bans German Valorant player over used CPU flagged by Vanguard
The player said Riot support told them the processor's serial number was blacklisted due to the previous owner's alleged cheating.
A German Valorant player says their account was blocked after they installed a used Ryzen 7 5800X3D processor that had been flagged by Riot Games' Vanguard anti-cheat system.
The player's account, shared on Reddit, describes a hardware-linked enforcement case that could complicate secondhand PC upgrades.
The player said they bought the used CPU on Kleinanzeigen, a German online marketplace, in late September.
"VALORANT had worked on their computer with the previous processor, they reported, but the game kicked them out immediately after they installed the Ryzen 7 5800X3D," according to the report.
After contacting Riot support, the player said they were told the CPU’s ID or serial number had been blacklisted in Vanguard on August 12.
The alleged reason was that the previous owner had used cheats in VALORANT; that account does not establish who owned the processor before the purchase or what Riot’s investigation found.
The player also said Riot indicated that changing the graphics card would not resolve the problem because other components in the system had also been affected.
They believed replacing the entire PC might be the only way to play again, but the available report does not confirm that Riot recommended buying a new rig.
The reported sequence is straightforward, but the implications are less so: buyers cannot readily check whether a used component is associated with an anti-cheat flag before purchasing it.
PCWorld has described such cases as rare, while noting that hardware-based enforcement can create problems when a flagged part changes hands.
The case also puts a commercial tension into focus for publishers and competitive ecosystems.
Hardware identifiers can help anti-cheat systems respond to players who evade account sanctions, but enforcement tied to components may affect a new owner who had no part in the original misconduct.
Clear appeal routes and explanations of how hardware bans work are therefore important to player support and confidence in competitive integrity.
Riot ban decisions have prompted wider debate, including around VALORANT ban enforcement and questions about Riot’s suspension standards.
Those cases concern different enforcement circumstances, but underline why players and teams need confidence that sanctions are applied consistently and that affected users have a route to seek review.
For secondhand buyers, the Reddit account offers no confirmed pre-purchase screening method or guaranteed remedy.
The incident remains a player-reported case, but it highlights how hardware-linked anti-cheat decisions can extend beyond the original account and create uncertainty in the used PC market.
