First press Win+R to open the run, enter gpedit.msc to enter the Group Policy Editor.
Click User Configuration ——Manage Templates——windows Components——windows Explorer.
Find the setting named "Delete Security Tab", double-click to open, set to unconfigured.
1. Check the network connection, see if it is because of network reasons can not open the web page.
1. First try to kill the virus with Kingsoft Internet Security. If the running virus is cleared, the
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