Hello Art,
Do not modify the Default Domain or Domain Controller Policy. It is considered bad practice. Instead, create a new Group Policy as described in Chapter 15 of the guide.
Open an elevated command prompt on that Windows 7 workstation and run gpresult /h result.htm. The Result.htm file will be saved in the folder you run the command from. Check the output and see what gets applied.
How did you map those drives? From a user preference in the policy? If it set to create instead of update I think that is the reason why it does not work.
I need to write a little help tutorial for adding screenshots.
answered 09/02/2018 06:28