Error 1606:Could not access network location Autodesk\Autocad

1606 Error + Autodesk 20xx installation + Product Initialization

We have been getting a lot of 1606 errors recently with various Autodesk products.  One suggestion that has worked to resolve this issue has been to...
1. Run regedit.exe.
2. Browse to:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

Please check for “Name” =  Common Documents defined as C:\Users\Public\Documents

 

If you cannot find registry key name and data, please add below registry information under:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

Key name    : Common DocumentsType            : REG_SZData             : C:\Users\Public\Documents

 

OR Maybe another cause

Public folder exist or not in c:\users