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The 403 Forbidden HTTP status code indicates that the client was able to communicate with the server, but the server won't let the client access what was requested.

This response is returned by the Apache web server when directory listings have been disabled. Microsoft IIS responds in the same way when directory listings are denied.

403 Substatus Error Codes for IIS

• 403.1 - Execute access forbidden.
• 403.2 - Read access forbidden.
• 403.3 - Write access forbidden.
• 403.4 - SSL required.
• 403.5 - SSL 128 required.
• 403.6 - IP address rejected.
• 403.7 - Client certificate required.
• 403.8 - Site access denied.
• 403.9 - Too many users.
• 403.10 - Invalid configuration.
• 403.11 - Password change.
• 403.12 - Mapper denied access.
• 403.13 - Client certificate revoked.
• 403.14 - Directory listing denied.
• 403.15 - Client Access Licenses exceeded.
• 403.16 - Client certificate is untrusted or invalid.
• 403.17 - Client certificate has expired or is not yet valid.

[edit] See also

• List of HTTP status codes
• Rewrite engine
• .htaccess

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