Hello!
A have same issue http://www.lansweeper.com/forum/yaf_postst6081_Unrecoverable-MAK-key.aspx
Windows 7 Professional Unrecoverable MAK keyThis is normal behavior. Lansweeper cannot recover Microsoft MAK keys, as these are not stored on the computer. When Lansweeper tries to scan these keys it will return the product ID, but not the actual product key.
For example the latest version of Total Network inventory software does not have this problem.
See screenshot:
https://www.dropbox.com/s/wgdlflepyamboyy/tn.JPG
Will you fix this bug in the next version LanSweeper?
Sorry for my english.