# Cannot write tags to some M4a files

**URL:** https://community.mp3tag.de/t/cannot-write-tags-to-some-m4a-files/11308
**Category:** Support
**Created:** [December 19, 2010, 9:09pm UTC](https://community.mp3tag.de/t/cannot-write-tags-to-some-m4a-files/11308 "2010-12-19T21:09:06Z")
**Posts on this page:** 5
**Page:** 1

<div class="post-metadata">

### Author: ![mjm917](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/m/73ab20/32.png) [@mjm917](https://community.mp3tag.de/u/mjm917)
#### Post date: [December 19, 2010, 9:09pm UTC](https://community.mp3tag.de/t/cannot-write-tags-to-some-m4a-files/11308/1 "2010-12-19T21:09:06Z")

</div>

Using MP3Tag to clean-up my library and found some M4a files that MP3tag could not read or write tags for. Did a search of the forumand it looks like this may have occurred previously but with m4v video files. As an FYI, I can read / write tags in itunes v10.1. I thought maybe the tags were corruptso I tried to use ID3Killl to clear all the tags but that didn't do anything.

Also tried another editor, TagScanner v5.1, and it cannot read / write tags for the files either. So this may not be a "bug" in MP3Tag.

Anyone got any ideas?

---

<div class="post-metadata">

### Author: ![garym](https://community.mp3tag.de/user_avatar/community.mp3tag.de/garym/32/4822_2.png) [@garym](https://community.mp3tag.de/u/garym)
#### Post date: [December 20, 2010, 10:12am UTC](https://community.mp3tag.de/t/cannot-write-tags-to-some-m4a-files/11308/2 "2010-12-20T10:12:48Z")

</div>

are you sure these don't have DRM?

---

<div class="post-metadata">

### Author: ![mjm917](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/m/73ab20/32.png) [@mjm917](https://community.mp3tag.de/u/mjm917)
#### Post date: [December 23, 2010, 10:11pm UTC](https://community.mp3tag.de/t/cannot-write-tags-to-some-m4a-files/11308/3 "2010-12-23T22:11:07Z")

</div>

All tracks on the album are edittable except for one. The tracks were DL'd from iTunes recently so they should have any DRM as iTunes has removed / stopped using it haven't they?

---

<div class="post-metadata">

### Author: ![garym](https://community.mp3tag.de/user_avatar/community.mp3tag.de/garym/32/4822_2.png) [@garym](https://community.mp3tag.de/u/garym)
#### Post date: [December 23, 2010, 10:13pm UTC](https://community.mp3tag.de/t/cannot-write-tags-to-some-m4a-files/11308/4 "2010-12-23T22:13:03Z")

</div>

yes, that's my understanding (about itunes and DRM). No other clues on my end.

---

<div class="post-metadata">

### Author: ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:22pm UTC](https://community.mp3tag.de/t/cannot-write-tags-to-some-m4a-files/11308/5 "2026-02-09T12:22:45Z")

</div>