"IIS Configuration 401 Error" Perfect Solution (54Powerman) 1, Error Number 401.1 Symptom: HTTP Error 401.1 - Unauthorized: Access Due to the invalidation of credentials. Analysis: Because user anonymous access (the default is IUSR_ machine name) is disabled, or no permission access computer will cause users to access. Solution: (1) Viewing whether an anonymous account for site security settings in IIS Manager is disabled, if so, try to enable: Control Panel -> Management Tool -> Computer Management -> Local Users and Groups, will IUSR _Computer name account is enabled. If you haven't resolved yet, please continue next. (2) Viewing the default anonymous access account of the site in the IIS Manager in the IIS Manager, whether the group belongs to access the server via the network, if you do not try to give privileges: Start -> Program -> Management Tool -> Local Security Policy -> Security Policy -> Local Policy -> User Rights Assignment, Double-click "Access this computer from the network" to add IIS default users or the group they belong. Note: General Custom IIS default anonymous access account belongs to groups, for security, there is no special needs, please follow this rule.
2. Error number 401.2 Symptom: HTTP Error 401.2 - Unauthorized: Access Due to server configuration is rejected. Cause: Close anonymous authentication solution: Run INETMGR, open Site Properties -> Directory Security -> Authentication and Access Control -> Select "Enable Anonymous Access", enter your username, or click "Browse" to select legal users And then enter the password twice to determine.
3. Error number: 401.3 Symptoms: HTTP Error 401.3 - Unauthorized: Access Due to the setting of the ACL to the requested resource is rejected. Cause: IIS Anonymous User Generally belongs to the guest group, and we generally allocate the rights of the hard disk of the stored website to the Administrators group. At this time, according to the principle of inheritance, the website folder is only members of the Administrators group to access the IIS anonymous users. The NTFS permissions of the file are insufficient, resulting in the page that cannot be accessed. Solution: Give IIS anonymous users to access the website folder permissions: Enter the security options for this folder, add IIS anonymous users, and give appropriate permissions, generally read, write.
