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When setting up Header Authentication in Qlik Sense, the browser displays a 401 Error, "Could not authenticate the request: Expected an authentication header".
Environments:
- Qlik Sense, all versions
Resolution:
This error means that the browser is not sending the required authorization headers.
For example, given a Virtual Proxy configuration as follows:
| Setting | Value |
| Prefix | dynamic-header-auth |
| Authentication Method | Header authentication dynamic user directory |
| Header authentication header name | my-header |
| Header authentication dynamic user directory | $ud\\$id |
Given a server with name qlikserver1.domain.local, this virtual proxy would be accessed at https://qlikserver1.domain.local/dynamic-header-auth/hub with the header my-header: some-user\some-domain.
Testing with the ModHeader Extension for Chrome:
In the below example, the "ModHeader" Chrome browser extension is used to inject the headers. If the headers are not provided, then the error "Could not authenticate the request: Expected an authentication header" is thrown.
Testing with Powershell:
You can use Powershell's Invoke-WebRequest method to verify this functionality as well, if you do not want to or are not able to install Chrome or the ModHeader extension.
$hdrs = @{}
$hdrs.Add("my-header","some-domain\some-user")
$url = "https://qlikserver1.domain.local/dynamic-header-auth/hub"
Invoke-WebRequest -Uri $url -Method Get -Headers $hdrs
An example successful response:
StatusCode : 200
StatusDescription : OK
Content : <!doctype html>
<html lang="en">...
An example error response:
Invoke-WebRequest : <!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
<meta name="google" value="notranslate"/>
<title>401 - Http code: 401</title>....
Qlik does NOT support the 3rd party software mentioned and used in this documentation. Please use them at your own discretion and, if concerned, contact the proper IT team within your company to verify the ability to use non-Qlik related software in the environment.?
These examples/code are made available "AS IS" without warranty of any kind. Qlik support agreement does NOT cover support for this code, please use at your own discretion and, if concerned, contact the proper IT team within your company.
