You can download the archived version of Microsoft Network Monitor 3.4 directly from the Official Microsoft Download Center . 3.4.2350. File Options: NM34_x64.exe (for 64-bit systems). NM34_x86.exe (for 32-bit systems). NM34_ia64.exe (for Itanium-based systems).
Netmon 3.4 is designed for older Windows environments but can often run on newer versions with manual adjustments. Minimum Requirement 1 GHz or faster Memory 1 GB or more RAM Hard Disk 60 MB for installation, plus extra space for capture files Official OS microsoft netmon 3.4 download
Microsoft Network Monitor (Netmon) 3.4 is a powerful, legacy protocol analyzer used for capturing and analyzing network traffic on Windows systems. Although it has been superseded by tools like Wireshark and the now-discontinued Microsoft Message Analyzer, it remains a favorite for some administrators due to its simplicity and unique ability to group traffic by specific applications. You can download the archived version of Microsoft
It is considered an archived product and is no longer under active development. System Requirements NM34_x86