> certain upgrades
Could you be a bit more vague? Your subject claims it happens because you
also installed Office 2007 Home and Student Edition. So at what exact point
did you notice the change? An upgrade shouldn't have caused this.
What happens when you choose;
Help-> Activate Product...

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Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
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> After certain upgrades from Microsoft my Outlook is converted to a trial
> version. Why and how do I fix? I don't have the disc to repair.