mrinfo.exe is a command-line utility described in Microsoft KB225158 as querying a multicast router for its interfaces and neighbors. The article’s claim that it was the “only multicast command-line tool included with Windows” applies specifically to Windows 2000; it does not establish whether the utility ships with Windows 10, Windows 11, or current Windows Server releases.
What does mrinfo.exe do?
Archived text of Microsoft Knowledge Base article 225158 describes mrinfo.exe as a way to query a multicast router for information about its interfaces and neighbors. The archived article, whose listed last-modified date is February 23, 2007, says it was the only multicast command-line tool included with Windows 2000.
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That is a historical, version-specific statement—not evidence that the executable is the only such tool in every Windows release. The archived article is the source for the claim; current Windows inclusion and exclusivity are not established by the sources cited here.
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How do you use the documented mrinfo syntax?
KB225158 gives this syntax:
mrinfo [-n] [-i address] [-t secs] [-r retries] destination
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Here, destination is the address or name of the router to query. The options control how the query is made:
-ndisables neighbor name resolution.-i addressselects the local interface address used to submit the query.-t secssets how long to wait for query responses.-r retriessets the number of retries for SNMP queries.
This is the syntax documented by the Windows 2000-era article; it should not be taken as confirmation that mrinfo.exe is available or behaves identically on a particular current Windows installation.
Does mrinfo.exe come with Windows 10 or Windows 11?
The available documentation does not verify whether mrinfo.exe ships with Windows 10, Windows 11, or current Windows Server versions. Nor does it establish that the program is absent. The Windows 2000 statement cannot resolve either question for newer releases, and a broad command reference that does not mention a command would not, by itself, prove that it is absent.
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Winsock: multicast programming
Microsoft’s Winsock multicast programming documentation covers application-level multicast behavior. It describes support for IGMPv2 and IGMPv3 for IPv4 and MLDv1 and MLDv2 for IPv6, with applications using socket options or IOCTLs to join groups and control multicast behavior. This is programming/API guidance, not a documented command-line substitute for querying a router’s interface and neighbor list.
wdsutil: Windows Deployment Services transmissions
The wdsutil reference for Get-MulticastTransmission describes inspecting multicast image transmissions in Windows Deployment Services, including transmissions and connected clients. That is a deployment-management task, not a router-information query. The page lists applicability for Windows Server 2016, 2019, 2022, and 2025; Windows 10 and 11; and Azure Local 2311.2 and later. It does not identify wdsutil as a replacement for mrinfo.exe.
Is the FreeBSD mrinfo command the same program?
No identity or compatibility between the Windows executable and the separately documented FreeBSD utility is established. The FreeBSD mrinfo(8) manual describes a tool that queries multicast-router configuration using an ASK_NEIGHBORS IGMP message. The shared name does not show that the two implementations are interchangeable.
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