fail authentication

[/feɪl ɔːˌθɛntɪˈkeɪʃən/]
verb phrase
falhar na autenticação
1. to be unable to verify one's identity or credentials through a security process; when a user's login attempt is rejected due to incorrect password, invalid username, or other credential verification failure
The user will fail authentication if they enter the wrong password three times.
O usuário falhará na autenticação se inserir a senha errada três vezes.
2. in security systems, when a system cannot confirm that a user or device is legitimate
The request failed authentication because the API key was expired.
A solicitação falhou na autenticação porque a chave de API estava expirada.
This is primarily technical jargon used in cybersecurity, software development, and IT support contexts across both Brazilian and North American English-speaking communities. In Brazil, it's commonly encountered in corporate IT environments and tech startups. The phrase is universal in digital security contexts with minimal regional variation in meaning.
Synonyms / Sinônimos
authentication failurefailed logindenied accessauthentication error
Antonyms / Antônimos
pass authenticationsuccessful authenticationgrant accessauthenticate successfully

Regional Variations

General Brazilian Portuguese
falhar na autenticação
most common and formal usage in tech contexts
São Paulo
falha de autenticação
alternative noun phrase form commonly used in IT departments
Rio de Janeiro
autenticação falhou
colloquial variation used in technical support
Portugal
autenticação falhou / falha de autenticação
both forms acceptable; 'falhou' emphasizes the action, 'falha' the result

Related Words

authenticationcredentialspasswordloginsecurityverificationidentity

Related Idioms & Phrases

locked out of the system
denied at the gate
security breach attempt
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