When I tried to clean my PC and my laptop today.  I was alerted to the fact that CCleaner could not fully clean EDGE because of certain settings controlled by the registry and/or group policy.  I was linked to the following page https://www.ccleaner.com/docs/ccleaner/troubleshooting/how-to-disable-pre-launching-and-pre-loading-so-ccleaner-can-fully-clean-edge which gave instructions on how to change the registry to avoid this problem.  However, when I tried following the instructions for the registry changes on my laptop the registry key mentioned does not exist. Specifically the MicrosoftEdge key in HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\MicrosoftEdge\Main is not present.  I had changed my settings on my Windows 10 Pro desktop by following the group policy instructions but the same key is not there on that machine either.  Both my laptop and desktop are Windows 10 1809.  Can anyone enlighten me on what to do since the instructions are in error?