The second problem UAC had to address was that users sometimes need administrative rights to perform such operations as installing software, changing the system time, and opening ports in the firewall. ![]() First, because the Windows usage model has been one of assumed administrative rights, software developers assumed their programs would run with those rights and so could access and modify any file, registry key, or operating system setting. UAC had to address several problems to make it practical for a user to run with a standard user account. Running with standard user rights can thus mitigate the impact of malware and protect sensitive data on shared computers. ![]() Without administrative rights, users cannot accidentally (or deliberately) modify system settings, malware can’t normally alter system security settings or disable antivirus software, and users can’t compromise the sensitive information of other users on shared computers. ![]() UAC is meant to enable users to run with standard user rights, as opposed to administrative rights.
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