Windows 2000, XP Home, XP Pro, XP Tablet PC, XP Media Center, Server 2003 or Vista (XP Pro recommended)
32-bit Pentium or alike (recommended: 400MHz or greater), 64-bit processors in WoW64 emulation - see remarks below
128MB RAM system memory (recommended: 256MBytes or more)
75MB available disk space (plus size of user's capture files, e.g. 100MB extra)
800*600 (1280*1024 or higher recommended) resolution with at least 65536 (16bit) colors (256 colors should work if Wireshark is installed with the "legacy GTK1" selection of the Wireshark 1.0.x releases)
A supported network card for capturing:
Ethernet: any card supported by Windows should do
WLAN: see the MicroLogix support list, no capturing of 802.11 headers and non-data frames
Other media: See
http://wiki.wireshark.org/CaptureSetup/NetworkMedia
Remarks:
Older Windows versions are no longer supported because of three reasons: None of the developers actively use those systems any longer which makes support difficult. The libraries Wireshark depends on (GTK, WinPCap, ...) are also dropping support for these systems. Microsoft also dropped support for these systems.
Windows 95, 98 and ME will no longer work with Wireshark. The last known version to work was Ethereal 0.99.0 (which includes WinPcap 3.1). You can get it from
http://ethereal.com/download.html. According to this bug report, you may need to install Ethereal 0.10.0 on some systems. BTW: Microsoft no longer supports 98/ME since July 11, 2006!
Windows NT 4.0 will no longer work with Wireshark. The last known version to work was Wireshark 0.99.4 (which includes WinPcap 3.1), you still can get it from:
http://prdownloads.sourceforge.net/wireshark/wireshark-setup-0.99.4.exe. BTW: Microsoft no longer supports NT 4.0 since December 31, 2005!
Windows CE and the embedded (NT/XP) versions are not supported!
64-bit processors run Wireshark in 32 bit emulation (called WoW64), at least WinPcap 4.0 is required for that
Multi monitor setups are supported but may behave a bit strangely