# \[OPTIONAL] Apache Headers

{% hint style="warning" %}
It has come to our attention that a limited number of hosting providers may inadvertently strip certain essential headers from incoming requests for security reasons. Unfortunately, this can result in authentication-related problems, causing our product to encounter issues during operation. To fix this issue, follow the guide below.
{% endhint %}

* Open the location of the CAD Web Files.
* Turn on hidden files.
* You should see a `.htaccess` file. Open that file and add the following at the very bottom of the file:

```
RewriteEngine On
RewriteCond %{HTTP:Authorization} ^(.*)
RewriteRule .* - [e=HTTP_AUTHORIZATION:%1]
```