> For the complete documentation index, see [llms.txt](https://docs.devolutions.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.devolutions.net/server/fr/knowledge-base/troubleshooting-articles/securitytokeninvalidissuerexception-idx10205.md).

# SecurityTokenInvalidIssuerException - IDX10205

Lorsque vous tentez de vous connecter à Devolutions Server depuis Remote Desktop Manager ou via l'interface Web, vous pouvez obtenir l'erreur suivante dans les journaux de Devolutions Server.

```
SecurityTokenInvalidIssuerException - IDX10205: Issuer validation failed. Issuer: 'System.String'. Did not match: validationParameters.ValidIssuer: 'System.String' or validationParameters.ValidIssuers: 'System.String'.
  at Microsoft.IdentityModel.Tokens.Validators.ValidateIssuer(String issuer, SecurityToken securityToken, TokenValidationParameters validationParameters)
  at System.IdentityModel.Tokens.Jwt.JwtSecurityTokenHandler.ValidateTokenPayload(JwtSecurityToken jwtToken, TokenValidationParameters validationParameters)
  at System.IdentityModel.Tokens.Jwt.JwtSecurityTokenHandler.ValidateToken(String token, TokenValidationParameters validationParameters, SecurityToken& validatedToken)
  at Devolutions.Server.Handler.OAuthHelper.LoginWithOAuth(String bearerToken)
```

### Solution

Le problème peut découler d'une chaîne d'URI d'accès invalide comportant un « / » supplémentaire à la fin de l'URL. Assurez-vous de la définir correctement selon cet article [URI d'accès](/server/fr/knowledge-base/knowledge-base-articles/access-uri-format.md).


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