![]() ![]() The same applies to Office 2016, Office 2019 and Office 2021 licenses that are linked to your Microsoft Account. Note: Microsoft 365 installations don’t require a license key as they activate automatically when you log on to Office with your Microsoft Account. However, for either version there is no need to completely reinstall Office. The proper method to determine or change the Product Key depends on your version of Office or Outlook. While you could simply try one of your Product/License Keys and see if it gets accepted, it’s not a very sophisticated approach. How can I find out which license I've used for which computer and how can I change the key if needed? reg file extraction routine.I've got several licenses for Office and Outlook but I'm not sure which one which ones I've used and which ones are free. If I wanted to expand the script, I could add a Registry or. If you are having trouble extracting the data, you can Export the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion Key and then open the resulting. ![]() If you cannot access an interface to the machine, but can access the filesystem, find the Registry Hive at: %WinDir%\system32\config\software You can see the details about where to find the DigitalProductId Value in another answer, but essentially, look in the Registry Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion Parser.add_argument('-v', '-verbose', dest='verbose', action='store_true', help="""Output more information about conversion""") Parser.add_argument(dest='hexstring', help="""The hex string to decode (from the Registry)""", metavar='STRING') Parser = argparse.ArgumentParser(description="""Decode a Windows Registry value to the corresponding Product Key""") Return cls(int(shex, 16), *args, **kwargs) Return from_hex_string(cls, shex, *args, **kwargs): Self._verbose = _int_to_indices(cls, val):Ī_idx = list(self._int_to_indices(self._val))Įprint('Invalid Product Key length: '.format(len(s_key), s_key, self._val))Ĭhunks_key = (s_key for pos in range(0, 5)) (s.format(*args, **kwargs) + '\n')ĭef _init_(self, val, verbose = False): If you are able to extract the 15 bytes from positions 0x34 and 0x52 (52-66) in the DigitalProductId Registry Value as a Hex string, you can use the following Python (Python 3) script to convert the bytes to a Product Key: import sys I did it this way about 4 years ago, so I'm really hoping ProduKey works. Mapped to Microsoft's custom base24 alphabet "BCDFGHJKMPQRTVWXY2346789" and a hyphen every 5 chars: KHCQQ-BBCW2-TT7QR-F42M6-V3YQY If that doesn't work, you'll have to dig it out of the registry file manually by searching C:\WINDOWS\system32\config\software for the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\DigitalProductIdīytes 52-66 (0x34 - 0x42) of this key hold a 15 byte number.Ī2 23 51 D0 2A 38 5D 22 C4 41 6B 87 43 C1 00 Apparently Nirsoft's ProduKey can do this:
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