Ok, I used the program Tweaking Computer from this site. I have a message out to Shane the program owner but it is Sunday and he may be doing something else. The net result was the used space on the C drive doubled and I can no longer access Outlook. It is not Outlook because if I rename the pst file it opens as a new instances and makes a new pst file. So there is something wrong with the pst file itself or the path but the error message does not say "could not find" but rather I don't have the right permissions to open it.
I've been through the permissions rights assignment drills from within windows and the takeown and icacls process from the cmd line. All results say that I am fully in charge of the file but it still says access denied.
Everything else on the computer appears to work ok except Word which opens by complaining about a templete it can't find but then goes to open ok.
I've been at this all day and I've done websearches on many variations of the problem description hoping to find an answer but no joy so far.
Any help will be greatly appreciated.