NTDEV, a computer technician from the US, was one of millions of users who downloaded the code last week.
But instead of waiting for an official statement from Microsoft which is very likely to never come, NTDEV decided to write the code and find out for itself whether it is authentic or not.
According to videos posted on the Internet, the technician managed to write the code for Windows XP over the weekend and Windows Server 2003 yesterday.
NTDEV reports that these missing items mean that the code Leaked XP cannot be fully used for "full OS replacement", but that the code is genuine.
“Some archives, such as kernel and explorer can be compiled easily. I have tested some programs from the compiled XP source and they appear to be identical to the commercial versions of Windows,” NTDEV reports.
Apart from the missing items, NTDEV believes that “the source can be used to compile all SKUs, as well as free (optimized) retail builds.”
As for Windows Server 2003, the second major version of Windows operating system in last week's leak, NTDEV said the code was also authentic.
"The leaked Server 2003 source code is actually more complete than the XP source code, but it does not have the Winlogon source code."
“I guess that's because it might contain her code procedureactivation (just a hypothesis).
"However, unlike XP, I was able to create a workable installation of [Server] 2003, but I had to replace some files (Winlogon is the most important, the rest are help files and drivers, mainly)," NTDEV said. .