NaviHelper manual removal:
Delete registry values:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{3E422F49-1566-40D3-B43D-077EF739AC32}
HKEY_CURRENT_USER\CLSID\{3E422F49-1566-40D3-B43D-077EF739AC32}
HKEY_CURRENT_USER\NaviHelper.NaviHelperObj
HKEY_CURRENT_USER\NaviHelper.NaviHelperObj.1
HKEY_CURRENT_USER\AppID\NaviHelper.DLL
HKEY_CURRENT_USER\AppID\{13FACA62-5FC4-4817-9175-9C8D00975916}
Delete files:navihelper.dll, host.dat
Misc:The list of advertising sites (host.dat) can be found in C:\Windows\System, C:\Windows\System32 or C:\Winnt\System32.
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