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As you can see this is a question from a non web developer. I would like to have an ASPX page which, under certain circumstances, can generate a 401 error from code. Ideally it would show the IIS standard page.
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One of the most common reasons you might experience a 401 error is that your browser's cache and cookies are out of date, preventing the authorization from successfully going through. If your browser isn't using the valid authentication credentials (or any at all), the server will reject the request.
The 401 Unauthorized Error is an HTTP status code error that represented the request sent by the client to the server that lacks valid authentication credentials. It may be represented as 401 Unauthorized, Authorization required, HTTP error 401- Unauthorized. It represents that the request could not be authenticated.
In this guide, we've gone over five methods to solve the 401 Unauthorized Error code: Confirm the URL is correct – double-check the URL in case it's misspelled or outdated. Clear user end issues – clear the browser's cache and cookies for a possible solution. If that fails, try flushing your DNS cache.
Response.StatusCode = 401; Response.End(); Set Response.StatusCode and then - if you need to stop execution - call Response.End().
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