wwwDAVRoot Error: You might not have permission, cannot open SharePoint folder in Windows Explorer

Attached is the error that we are getting when trying to open a Sharepoint folder in Windows Explorer.  

We tried increasing permissions.  No success.

The Web Client service is started.  So, there is no need to mess with it.

And, I cannot edit the registry on the IIS box to contain a new DWORD value as a Microsoft KB article suggested.  When I try to go to Edit...New...DWORD, the Registry Editor tells me that it can't create a value.

I'd rather not move any of the documents in this document library for fear of losing or messing up those documents.

What is the fix for this?  
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A few questions.

1-Were you able to do this in the past , and now it does not work .?
2-Are / were you able to perform this function from any other machine ?
3-The URL you are referencing does not look like a SharePoint standard URL , are you connecting to a library , or a list ?

Versions  ?
4-Client OS

Thank you

apitechAuthor Commented:

The fixes found in the following articles eliminated this error:




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apitechAuthor Commented:
Following the fixes outlined in both articles and rebooting the Terminal Server box that I was on eliminated this error.
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