Exchange 2007: Standard to Enterprise Upgrade Path

Here are some good guidelines when thinking about an Exchange 2007 upgrade:

• You can use a valid product key to go from the evaluation version (Trial Edition) to either the Standard Edition or the Enterprise Edition
• You can use a valid product key to go from the Standard Edition to the Enterprise Edition
• You can also re-license the server using the same edition product key
• You can change the product key without having to reinstall or reconfigure Exchange
• You cannot use product keys to downgrade from the Enterprise Edition to the Standard Edition, nor can you use them to revert to the Trial Edition

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