I was not able to edit my IE setting for “trusted” site. IE was harden to the core for any type of editing
Google helped me ☺
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Close all IE windows.
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Start > Run > (type in) “regedit” > [OK]
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Navigate to/See if you have the following key... HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings
If it's not found, STOP
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If it's found, select (highlight) the key then look in the right pane: Is there a DWORD value of "Security_Zones_Map_Edit" or "Security_HKLM_only" (without the quotes)?
If not, STOP
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If so, right-click on the key (in left pane) > Select "Export" & save the file to your desktop (to back up the key for safety's sake).
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Now, right-click on the same key again > Select "Delete" > Close “regedit” then reboot your machine.
But my problem did not stopped here I have added wrong URL under “trusted ” sites and I was getting error message "The site you specified already exists in another zone. Please remove the site from that zone before adding it to the current zone."
Now what to do ? Almost all the sites which get added into “trusted” sites are listed under
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains
Deleted the key and then I was able to update the “trusted” sites entry
Thank You Google