Unable to update security definitions

When I start a security file definitions update, it goes verrrry slowly, and ultimately hangs after about 20 minutes. It takes Task Manager to end it. Can you help, please?

Yesterday, when I attempted to open counterspy, it hung on the loading common libraries. Did an uninstall/reinstall, and this definitions update problem began when I first attempted to bring CounterSpy back up to current versions. V 2.5.1032, definitions 569
 
sad I’m frustrated
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