When I send an email to someone outside the firm, when I only type the first letters of its name (Contact), I get the auto-suggest of the "Already-sent" users.
So now, since a few days, the emails are not kept in memory by Outlook (NK2 file). I see that that file is only 2kb and on my old machine, it's almost 200kb (So a lot more email addresses kept in memory)
Should I just rebuilt the Outlook profile or the whole Windows Profile? A simple Outlook reinstall or to build a new PC?