It is most likely to change the Security Center and firewall accounts so that they cannot be identified with each other, and you can use all set up cost services to unify the two accounts.
1, in the WIN8 system directly click Win+x key combination Run (R), in the input box to enter Services.msc characters, and then click Enter.
2, then find the Security Center and Firewall (System firewall) services.
3, the above two services right click, select Properties, and then log on.
4. After you select this account, write "Local Service" in the back, and note that "local account" is not written.
5, then in the password bar input Win8 local account password, if not set the words is empty, directly determine.
6, the end will start Windows Firewall and Security Center both services are started, so the firewall can be successfully opened.