Internet Explorer cannot be added to trusted sites or restricted sites. Solution

1. In the lower left corner of the windows system, click Start> Run> regedit to open the registry editor of the system.

2. On the left of the registry, locate [HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Internet
Settings \ ZoneMap]

3. Right-click Domains and select "permission". Then we can see that "permission" has some problems.

4. Click "add"> "advanced"> "search now" on the permission page. Then, we will set your current logon account here.

If you haven't changed the name, it should be Administrator. We just need to find Administrator and click "OK ".

5. Check "full control" and confirm to disable the permission.

Now we have recovered the security site. To sum up, this is actually a permission issue. If our permissions are not set, problems may occur.