Find Windows Product ID using Registry

Microsoft uses various Product IDs to identify variants of the Windows platform. A Windows product ID (currently, as of XP/2003/Vista) has the following format: xxxxx-yyy-zzzzzzz-zzzzz

1. Goto Start -> Run (or) Press Window + R;

2. Type Regeedit

3. Navigate to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion 

4. Windows Product ID listed under ProductId Data Value in a same Row.

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