Serial - RH50-GU32-WCFV-BE8N-3M9N-9VMCValidation code - D69A-19CE-FFFF-CA80-FC80How to install:-Disable internet connection.-Install Rhino and use this serial - RH50-GU32-WCFV-BE8N-3M9N-9VMC-Open Rhino and in Validation window use this code - D69A-19CE-FFFF-CA80-FC80-Start Menu > Control Panel > Administrative Tools-Under Administrative Tools > Services-In the Services dialog, scroll down to McNeel Update:eg: McNeel Update (32-bit)eg: McNeel Update Service 5.0 (64-bit)-Right-click on McNeel Update and then click Stop-Right-click again and click Properties, under the General tab > Startup type > set to "Disabled"-Enable internet connection.If someone have an old license but wanna to use the new license with validation code - you need to remove the old one.-Unhide hidden Files and Folders: > Organize > Folder and search options > View > Show hidden files,folders,and drives.-You need to delete the file named 60515f84-8f7f-41da-801d-1c87e32f88f5.lic inside [SYSTEM DRIVE]:\ProgramData\McNeel\Rhinoceros\5.0\License Manager\Licenses folder.-Start Rhino and fill new serial and new validation code.