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.WMX file extension

To open .WMX files on Windows, right-click the .wmx file and choose Open with > Windows Media Player (or double-click if Windows Media Player is already the default).

To open a .wmx file, use Microsoft Windows Media Player on Windows—it treats the file as a redirector/metafile and then plays the referenced .wma/.wmv content. If it won’t play, the .wmx usually points to media that’s missing or unreachable.

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Last updated: October 13, 2026

Open on your device

Choose your operating system for a dedicated step-by-step opening guide.

How to open .WMX files

Use these platform-specific instructions to open .WMX files safely.

Windows

  1. Right-click the .wmx file and choose Open with > Windows Media Player (or double-click if Windows Media Player is already the default).
  2. If nothing plays, open Windows Media Player first, then use File/Open (or drag the .wmx into the player) to see whether it resolves the referenced media.
Full Windows guide

Mac

  1. There is no commonly documented native support for .wmx on macOS in the provided sources; if you received a .wmx, open it on a Windows PC with Windows Media Player.
  2. If you only need the target media, ask the sender for the actual .wma/.wmv files or a more broadly supported playlist format.
Full Mac guide

Linux

  1. There is no commonly documented native support for .wmx on Linux in the provided sources; the most reliable approach is to open it on Windows with Windows Media Player.
  2. If playback is the goal, obtain the referenced .wma/.wmv files directly rather than the redirector.
Full Linux guide

iOS

  1. iOS apps are not documented in the provided sources as supporting .wmx; transfer the file to a Windows PC and open it in Windows Media Player.
Full iOS guide

Android

  1. Android apps are not documented in the provided sources as supporting .wmx; transfer the file to a Windows PC and open it in Windows Media Player.
Full Android guide

Security notes

  • .wmx is a redirector/metafile: it can point to media on remote servers/URLs. Treat unexpected .wmx files like you would an untrusted link, because opening it may cause Windows Media Player to reach out to external locations.
  • Because it references other content (such as .wma/.wmv), the safety of what happens next depends on the trustworthiness of the referenced source (and the media file itself), not just the .wmx file you received.
  • If a .wmx comes from an untrusted source, consider inspecting it as plain text to identify what locations it references before opening it in a player.

Can't open this file?

These are the most common causes and fixes when .WMX files fail to open.

Common reasons

  • Windows Media Player opens but nothing plays
  • .wmx opens in the wrong app
  • A website/server serves .wmx with the wrong MIME type

Fix steps

  1. Confirm you have access to the referenced media (the actual .wma/.wmv) and that it hasn’t been moved or deleted.
  2. If the .wmx points to a network/URL location, verify the location is reachable from your PC (and that your network allows it).
  3. If you only received the .wmx, request the actual media files from the sender.

Recover a deleted or lost .WMX file

If the file was deleted by mistake or the drive was formatted, data recovery software may be able to get it back. Stop writing to that drive right away, because new data can overwrite what you want to recover.

MiniTool Power Data Recovery

Windows software that recovers deleted or lost files from PCs and external drives such as HDDs, SSDs, USB drives and memory cards, after deletion, formatting or a crash.

Wondershare Recoverit

Windows and Mac software that recovers deleted or lost files from computers and external drives such as HDDs, SSDs, USB drives and SD cards.

We may earn a commission when you use affiliate links. This supports our free file extension guides.

OS-specific troubleshooting

What is a .WMX file?

.wmx is a Windows Media Metafile (Windows Media Redirector) that references Windows Media audio/video files (for example .wma, .wmv, or both). It does not store the actual audio/video stream; it stores redirection/playlist-style information that Windows Media Player interprets to locate and play the referenced content.

Background

WMX is part of the Windows Media ecosystem and is handled by Windows Media Player as a redirector/metafile rather than a standalone media container. In practical terms, it behaves like a pointer: double-clicking it in Windows Media Player typically results in the player attempting to open the actual media locations referenced inside the file.

Common MIME types: video/x-ms-wmx

Further reading

Authoritative resources for more details on the .WMX format.

Common .WMX issues

Windows Media Player opens but nothing plays

A .wmx file is a redirector/metafile; if the referenced .wma/.wmv files are missing, moved, blocked, or the network location is unavailable, playback will fail even though the .wmx opens.

  1. Confirm you have access to the referenced media (the actual .wma/.wmv) and that it hasn’t been moved or deleted.
  2. If the .wmx points to a network/URL location, verify the location is reachable from your PC (and that your network allows it).
  3. If you only received the .wmx, request the actual media files from the sender.

.wmx opens in the wrong app

Windows file associations may be set to a text editor or another program, so double-clicking doesn’t launch Windows Media Player.

  1. Right-click the .wmx file and choose Open with > Windows Media Player.
  2. Optionally set Windows Media Player as the default app for .wmx via Windows “Choose a default app by file type” settings.

A website/server serves .wmx with the wrong MIME type

If a server doesn’t map .wmx correctly, browsers/players may not recognize it as Windows Media Redirector content. Some Microsoft mappings associate .wmx with a vendor MIME type.

  1. Configure the web server to send an appropriate MIME type for .wmx (commonly mapped as video/x-ms-wmx in Microsoft mappings).
  2. After changing the server configuration, retest by downloading/opening the .wmx in Windows Media Player.

FAQ

Is a .wmx file a video file?

Usually no. Microsoft describes .wmx as a Windows Media Redirector (a Windows Media Metafile) that references .wma, .wmv, or both; it typically points to media rather than containing it.

What program opens .wmx files?

Microsoft Windows Media Player supports .wmx (Windows Media Redirector) files.

Why did I get a .wmx instead of the actual .wmv/.wma?

A .wmx can be used as a lightweight redirector/playlist-like file that tells Windows Media Player where to find the real .wmv/.wma content (often on a different path or server).

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