I don't know what is happening in your case, but how it works is a little complicated....

The Anti-Malware client actually makes a direct HTTP call to the OEM Vendors Site. (We don't control this)

Since we don't want every device going out one by one and don't want it going out HTTP the ZCM agent has a proxy built-in that captures that request and send it up the line as HTTPS to the on-demand servers that will then serve the cached files w/o needing to go out to the internet for each device.  Note: The On-Demand content server does do HTTPS to the OEM, not sure why natively it chose to do HTTP but we are working with the OEM to see if we can remove any HTTP calls in the future.

It is possible that something on your device is even preventing the packet request that is leaving your device from even making it to the proxy on the local device.  Or there could be something blocking the OEM content server from reaching the internet.  I posted a link recently that shows the URL that needs to be open to your OneDemand Content Server.

Customer has setup, that communication from every workstation to Internet is routed through firewall and is blocked. User need to authenticate to the FW to get access to Internet. It looks like, that the build in proxy isn´t doing the job right. Communication to ZENWorks primary server with OneDemand Content Server is permitted.

"Communication to ZENWorks primary server with OneDemand Content Server is permitted."

But that is not sufficient per my description.....

Communication from the PC to Itself is also required....Since the PC itself also acts as a proxy.

The Customer may need an SR to help track down issues.

Hi, Im having a similar issue with a windows machine, I have asked our ISP to allow sites as per https://www.novell.com/documentation/zenworks-2020/zen_sys_servers/data/t48d9pw19s7z.html for it on the firewall but I still get the same error

what is the link you mentioned that shows the URL as im struggling to find it

https://www.novell.com/documentation/zenworks-2020-update-2/zen_es_antimalware/data/t4ib8pdttw0e.html

Try giving access to NIMBUS.BITDEFENDER.NET

Most of the Anti-Malware Agent requests will pull from 

. https://microfocus-2dcb60a8-26c9-4560-9cc2-34a16ea5f6e6.2d7dd.cdn.bitdefender.net

These requests will be proxied through the ZENworks Content System.

However, at this point in time the NIMBUS calls are not, but this data is not as  critical as the core data through the CDN.

Issue is sorted Thank you!