# Missing tag information in mp3 and mp4 files in Windows Explorer

**URL:** https://community.mp3tag.de/t/missing-tag-information-in-mp3-and-mp4-files-in-windows-explorer/62630
**Category:** Support
**Tags:** player
**Created:** [November 1, 2023, 10:13am UTC](https://community.mp3tag.de/t/missing-tag-information-in-mp3-and-mp4-files-in-windows-explorer/62630 "2023-11-01T10:13:25Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [November 1, 2023, 11:40am UTC](https://community.mp3tag.de/t/missing-tag-information-in-mp3-and-mp4-files-in-windows-explorer/62630/2 "2023-11-01T11:40:19Z")

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I found e.g. this thread with the search words "mp4 publisher"

> [@Publisher tag not embedded properly](https://community.mp3tag.de/t/publisher-tag-not-embedded-properly/58545):
>
> Hi. I'm editing tags for my audiobooks (.m4b) and everything works flawlessly except for the Publisher tag. I added a new column and choose field & value %publisher% for it (the %publisher% field is an already available extended field in Mp3tag). I added the values for my audiobooks and hit Save. When I right click on the file and hit Properties, as well as when I load my audiobooks into an audiobook player, the Publisher field is empty. I check the file with MediaInfo, the tag is registered…

I doubt that the windows explorer is a vlid testbench to check whether information is available in tags.

If you want to see where the data is in MP3tag, see the extended tags dialogue Alt-T

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