Thanks for your reply.
Actually，yesterday I wanted to update my vpn client, so I uninstalled the old checkpoint VPN，maybe E60.. I cannot remember，at the same time, i installed the new E80.87, so, a series of problems appeared.
Now I find that I cannot install all vpn clients，E80.86，E80.87，E80.88 these 3 versions prompt a series of problems like this.
another all previous versions (before E80.86), prompt
My laptop have another vpn client but not in using，and before i uninstalled the old checkpoint vpn, they were all available.
Thanks for your recommendation. I will open a TAC case in this week.