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Windows 7 saves its installation date. It can be viewed with

cmd /k systeminfo | find "Original Install Date"

in the command prompt. How can I change the saved value to a different day?

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migrated from stackoverflow.com Apr 4 '12 at 17:44

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Do you intend to rotate(extend) your Trial version for some more time? –  uDaY Apr 4 '12 at 17:01
    
No I don't. I just wanna change the install date =). –  Damieh Apr 4 '12 at 18:04
    
Of course I have. My window's legit if that's why you're asking. –  Damieh Dec 11 '13 at 19:51

1 Answer 1

up vote 1 down vote accepted

The install date is stored in the registry value as UNIX time (32-bit value containing the number of seconds since 1/1/1970)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\InstallDate



Source

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thanks a lot!!! –  Damieh Apr 5 '12 at 3:21

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