Customer is unable to download the PMImport.cab file due to network errors. The following error shows when viewing the details of the PMImport task:
Proxy and or Firewall blocking
Patch Management Solution
In one situation the customer was able to workaround this issue by disabling the proxy and putting in firewall permits to access the SolutionSam site directly.
The following knowledgebase article will also be helpful in understanding the PMImport process including the necessary IP address information for proper firewall configuration: Detailed Import Patch Management for Windows access to SolutionSam