Microsoft Entra ID 로그인·토큰 발급 과정에서 기록된 AADSTS50034입니다. 오류 원문과 테넌트의 로그인 로그를 함께 확인하세요.
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UserAccountNotFound - To sign into this application, the account must be added to the directory. This error can occur because the user mis-typed their username, or isn't in the tenant. An application might have chosen the wrong tenant to sign into, and the currently logged in user was prevented from doing so since they did not exist in your tenant. If this user should be able to log in, add them as a guest. See docs here: Add B2B users.
변경 내역: Extracted official AADSTS table; Markdown stripped; short English error name selected; original Korean product context added. Official general diagnostic guide is distinguished from code-specific troubleshooting. Documentation license explicitly granted by README Legal Notices; repository LICENSE currently contains MIT terms, also retained as evidence.