Nessus Professional Windows Steps ( Exclusive ) :
You Don't Need Register To Nessus
1- Open CMD ( Run As Administrator )
2- Stop Nessus Service - ( net stop "Tenable Nessus" )
3- Change Files Attribute ( attrib -s -r -h "C:\ProgramData\Tenable\Nessus\nessus\plugins\*.*" )
4- Change Files Attribute ( attrib -s -r -h "C:\ProgramData\Tenable\Nessus\nessus\plugin_feed_info.inc" )
5- Update Plugins ( "C:\Program Files\Tenable\Nessus\nessuscli.exe" update "C:\Users\Amank\Desktop\all-2.0_202012232314.tar.gz" )
6- Copy File To Folder ( copy "C:\ProgramData\Tenable\Nessus\nessus\plugins\plugin_feed_info.inc" "C:\ProgramData\Tenable\Nessus\nessus\" )
7- Change Files Attribute ( attrib +s +r +h "C:\ProgramData\Tenable\Nessus\nessus\plugins\*.*" )
8- Change Files Attribute ( attrib +s +r +h "C:\ProgramData\Tenable\Nessus\nessus\plugin_feed_info.inc" )
9- Change Files Attribute ( attrib -s -r -h "C:\ProgramData\Tenable\Nessus\nessus\plugins\plugin_feed_info.inc" )
10- Start Nessus Service - ( net start "Tenable Nessus" )
11- Open
https://localhost:8834#/
Tested On Windows 10 Pro 20H2 v2 (64-bit)