Lansweeper pulls Windows computer data from WMI (Windows Management Instrumentation), a management framework built into Windows operating systems. It is known that the Win32_Processor WMI class that stores processor information incorrectly identifies processors as Intel Pentium III or Intel Pentium III Xeon in some cases, i.e. if the client machine is running an old operating system like Windows XP or Windows Server 2003. If WMI returns an incorrect processor name like Intel Pentium III Xeon, Lansweeper will as well. The cause of the problem lies in WMI on the client machine itself, not in Lansweeper.
Microsoft used to provide a hotfix to correct the aforementioned WMI issue on older operating systems. The hotfix had the following ID: KB953955. Unfortunately, this hotfix is no longer available for download on the Microsoft website. Microsoft also ended support for Windows XP and Windows Server 2003 years ago. As a result, it may be impossible to correct the processor detection issue on older operating systems. It is not recommended to attempt to download the WMI hotfix from third-party websites, as the security of these sites and the integrity of the download cannot be guaranteed.