You may notice that website content, such as video, text, or graphics, are not displayed when visiting a website because WebMonitor is blocking them. The page might be slow and some of its features do not work, or the page does not load at all. You may have already added the website to the WebMonitor whitelist.
Videos and other website contents are delivered through a Content Delivery Network (CDN) which is made of several dedicated servers working as distributed hosts of the content. If the CDN server is blocked, some of the website content will not be displayed (icons, images, etc.) or executed (scripts) correctly.
There are three possible resolutions for this issue:
- Whitelisting the CDN location
- Ensuring that the 'CDNs' category is not blocked by Web Filtering policies
- Websites partially blocked or very slow
Whitelisting the CDN location
- In the blocked website, look in the lower left-hand corner of your browser for a caution sign.
- Double-click it, and it will open a list of rendering errors on the page. In the list of errors, you will see the URLs that are linked to the errors.
- Once you identify the location of these images, and if the website is trusted, add them as Site entries in the WebMonitor console under Settings > Policies > Whitelist.
Ensuring that the 'CDNs' category is not blocked by Web Filtering policies
- From the WebMonitor console, navigate to Settings > Policies.
- Edit all the affected policies and make sure that General Interest > CDNs is not blocked.
Websites partially blocked or very slow
Follow the steps in this article to resolve the issue of partially blocked websites which results in the website being slow.
If the above steps do not resolve the issue, then create a ticket with logs generated by following the steps in this link - GFI WebMonitor | Gather Troubleshooter Logging Data