Para RDP, quando aparece “NTLM bloqueado”, é normalmente, política de segurança a recusar NTLM no servidor ou no cliente.
Verificar a policy local no servidor RDP
Abrir: secpol.msc
Local Policies > Security Options
Network security: LAN Manager authentication level
colocar:
Send NTLMv2 response only (aceita NTLMv2 e funciona com RDP)
Network security: Restrict NTLM: Incoming NTLM traffic
colocar:
Allow all (ou pelo menos “Allow domain accounts”)
Reiniciar políticas
gpupdate /force
Category Archives: Remote Desktop Services
Microsoft Remote Desktop ServicesNTLM bloquea acesso RDP
14 de Novembro de 2025 – 10:25
Remote App error
17 de Outubro de 2019 – 11:55
Error message:”The computer can’t verify the identity of the RD Gateway. It’s not safe to connect to servers that can’t be identified.”
Are you getting the error code: “The computer computer can’t verify the identity of the RD Gateway. It’s not safe to connect to servers that can’t be identified”? You most likely setup Remote Desktop Web Access (RDweb) with a self signed certificated.
The reason why you are getting this error is your machine doesn’t trust and can’t verify the identity of the RD Gateway.
To allow your machine to trust the RD Gateway and get RD Web Access working you will need to import the Cert from the website and put it into the “Trusted Root Certification Authorities” store
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