When you or your client is using OneDrive for Business it might be hard to explain the difference between ‘OneDrive’ and ‘OneDrive for Business’ in the Explorer view, or you just want to remove it from the list.
To do this you have to make a change in the Windows registry.
# Windows+R type; regedit
# Browse to \HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace\
# Look for the Key with the value ‘OneDrive’ or ‘OneDrive – Personal’ it probally will be key {018D5C66-4533-4307-9B53-224DE2ED1FE6}.
# Now go to HKEY_CLASSES_ROOT\CLSID and find the {018D…} key, change the ‘System.IsPinnedToNameSpaceTree’ from 1 to 0.
# Save and your are done.