When using DesignSpark Mechanical on workstations connected to workplace or corporate LANs, make sure that your local IT adds the following URL to the whitelist items on their proxy server:
A proxy authentication bypass is ideal as it allows the DSM application to have direct internet connection for activation.
If you are an add-on user, also add this URL to the 'allow' list on your firewall:
Also, add the following executables (EXEs) in the exclusions list for Windows Firewall:
They are located in the Program Files directory of your main Windows OS drive partition. For 32-bit computers, it's Program Files (x86)