450 Blocked by Windows Parental Controls
HTTP response status code 450 Blocked by Windows Parental Controls is an unofficial client error specific to Microsoft and returned by the server to indicate that the parental controls are turned on and are blocking access to the requested resource.
Usage
When the 450 Blocked by Windows Parental Controls status code is received, it implies that Windows Parental Controls have been enabled and are denying access to the target resource. For example, if the resource is a website then it does not qualify based on the parameters that have been configured.
Note
Search engines like Google will not index a URL with 450 Blocked by Windows Parental Controls response status, and consequently, URLs that have been indexed in the past but are now returning this HTTP status code will be removed from the search results.
Example
In the example, the HTTP client requests a resource and the server responds with the 450 Blocked by Windows Parental Controls because the HTTP client does not qualify based on the configuration.
Request
GET /rated_r/gallery.html HTTP/1.1
Host: www.example.re
Response
HTTP/1.1 450 Blocked by Windows Parental Controls
Content-Type: text/html
Content-Length: 159
<html>
<head>
<title>Blocked by Parental Controls</title>
</head>
<body>
<p>This content is restricted and cannot be viewed.</p>
</body>
</html>
Takeaway
The 450 Blocked by Windows Parental Controls status code is a client error that is sent by the server when the HTTP client tries to access content that does not qualify based on the settings for the account in use.