Hi Satish,

It is due to the Classifications defined in the Windows Classifications(discovery_classy_windows) table and we dont need to change the discovery patterns. If the operating systems contains '2022', '2016' or '2008' it will discover it as a windows server if the classification probe doesn't result operating system version number then it will go default as computer. Maybe for those devices you can check whether windows desktop os installed instead of windows server os. Also you can check what is the windows Classification probe payload results.

Regards,

Vivek