Yes even in this day and age people are still using Windows 2003 SBS.
SBS 2003 – 5 Cal Reset Issue
After much stuffing about I found that the SBS2003 licenses are kept in the licstr.cpa file in the WINDOWS\system32 folder. Thankfully, Microsoft actually keep an automatic backup of this in autolicstr.cpa. The simple process was to stop the License Logging Service, rename licstr.cpa to licstr.cpa.old, then copy autolicstr.cpa to licstr.cpa. After this I started License Logging Service and used Server Management to confirm that the licenses had been restored.
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