# MP4 files cannot be opened for writing

**URL:** https://community.mp3tag.de/t/mp4-files-cannot-be-opened-for-writing/49164
**Category:** Support
**Created:** [June 1, 2020, 1:47am UTC](https://community.mp3tag.de/t/mp4-files-cannot-be-opened-for-writing/49164 "2020-06-01T01:47:45Z")
**Posts on this page:** 1
**Showing post:** 6

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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: [June 1, 2020, 5:38pm UTC](https://community.mp3tag.de/t/mp4-files-cannot-be-opened-for-writing/49164/6 "2020-06-01T17:38:27Z")

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see e.g. here:

> [@"File Cannot Be Opened For Writing"](https://community.mp3tag.de/t/file-cannot-be-opened-for-writing/12416/20):
>
> Just an FYI. In Win 10 I had the same issue with some m4b files and found that they were being synced to OneDrive (Don't remember setting that up). You can tell by the status column in Explorer.

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