Since the previous version, I have received a message every time I attempt to remove tags from an MP4 file with the following notification. “Cannot write file *C\user\*elopez\Downloads\conversion\movie title.mp4*

[image] elopez712365: Since the previous version Have you tried the latest version? [image] Mp3tag Development Build Status Development Date: 2026-02-06 Version: 3.34-beta.2 Status: Beta warning Download: 64-bit mp3tag-v3.34-beta.2-x64-setup.exe …

I am seeing the same problem frequently in the latest build. It is not with all files, but about half of them. I found this posting, loaded the 64-bit beta on my Windows 11 machine and retried. Unfortunately, I got the same “Cannot write file” error. Is there any way for me to triage the issue, and…

See e.eg here: [image] Hints for asking Support Requests Support If you need support using Mp3tag, you can help the community members that are about to support you in finding a solution or workaround to your problem, by following these simple guidelines. Be de…

[image] gellee00: Further investigation shows that a file with my issue has ITUNESMEDIATYPE set. Trying with Exiftool, the documentation says that the particular tag, by definition, is not editable. I use the ITUNESMEDIATYPE field actively in my library of over 28K files without issue. I don'…

[image] gellee00: Trying with Exiftool What does the extended tags dialogue show? Does [image] gellee00: ITUNESMEDIATYPE appear there? Then it is editable by MP3tag. Or does the restriction that it is not apply to exiftool? [image] elopez712365: Cannot write file *C\user*elopez\D…

[image] gellee00: Trying with Exiftool, the documentation says that the particular tag, by definition, is not editable. Just to clarify, this is from the perspective of exiftool. The field seems to be not editable by exiftool, but can be edited fine by Mp3tag.

Not allow to remove tag

Support

ohrenkino February 10, 2026, 6:16pm 4

See e.eg here:

and here: