An ASX file serves as a redirect script that doesn’t store the actual media but instead uses `` elements pointing to legacy mms:// links, guiding your player to the real stream or file and optionally listing multiple items that play one after another.

If you loved this article and you would love to receive much more information with regards to ASX file information generously visit the site. ASX files frequently present human-friendly labels instead of raw URLs, sometimes paired with hints or older-style extras that modern players may ignore; they rose to prominence because sites and broadcasters needed dependable Windows Media Player launching, live-stream support, fallback streams, and the ability to change underlying endpoints without altering public links, and now if you want to know what an ASX truly does, you just open it and read the `href` values to see where it directs playback.

To open an ASX file, you’re really opening a pointer file that directs your player to the real media, so the method depends on your player and whether the references point online or locally; on Windows, the simplest option is to open it with VLC by right-clicking the `.asx`, choosing Open with, selecting VLC, and letting it follow the URLs, while Windows Media Player can work too but may fail with older protocols or unsupported codecs.

If playback doesn’t start or you want to verify its targets, open it in Notepad and look for `` lines, because the `href` value is the real media location you can copy into VLC’s Open Network Stream or into a browser for `http(s)` links; if there are multiple entries it behaves like a playlist, so you can try another `href` if one fails, and if older `mms://` links are involved, test them in VLC since modern players may not support them, with persistent failures usually meaning the stream is unavailable or requires legacy Windows Media components rather than the ASX being broken.

If you have an ASX file and want to find its real destination, treat it like a small text map: open it in Notepad and search for `href=`, usually inside ``, because whatever appears in that value is the real media/stream URL; multiple `` blocks mean playlist or fallback behavior, and `http(s)` links usually indicate modern URLs while `mms://` links are older Windows Media streams that you may need to test in VLC via Open Network Stream.

You may see machine-bound locations like `C:\...` or `\\server\share\...`, showing the ASX directs to resources that only exist on that computer or network, and inspecting the `href` entries beforehand ensures it’s not redirecting you to an odd domain while also highlighting whether broken or legacy URLs—not the ASX—are the true cause of playback issues.