# Pending at undo "Remove tag" operation
**URL:** https://community.mp3tag.de/t/pending-at-undo-remove-tag-operation/56287
**Category:** Support
**Created:** [February 12, 2022, 2:24pm UTC](https://community.mp3tag.de/t/pending-at-undo-remove-tag-operation/56287 "2022-02-12T14:24:02Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@enenkiel](https://community.mp3tag.de/u/enenkiel)
#### Post date: [February 12, 2022, 2:24pm UTC](https://community.mp3tag.de/t/pending-at-undo-remove-tag-operation/56287/1 "2022-02-12T14:24:02Z")
When I correct MP3s, tagged by MP3Tag including Arts, via MP3GAIN, APE-Tags are created by MP3GAIN and shown by MP3Tag. When I remove these Tags via MP3Tag "Remove Tags" and try to restore the combination ID3v2.3 (ID3v1 ID3v2.3) for a whole CD via "Undo", MP3Tag is pending. When I do the same procedure for a single item I have no problem at all.
I assume a "stack overflow" or a similiar problem in MP3Tag.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [February 12, 2022, 2:42pm UTC](https://community.mp3tag.de/t/pending-at-undo-remove-tag-operation/56287/2 "2022-02-12T14:42:54Z")
> [@enenkiel](#):
>
> When I remove these Tags via MP3Tag "Remove Tags" and try to restore the combination ID3v2.3 (ID3v1 ID3v2.3) for a whole CD via "Undo
The question would be: how do you do that?
Here is a way with which you can remove the APE tags without the "Undo" function:
> [@CAN't delete DISCNUMBER tag on some files](https://community.mp3tag.de/t/cant-delete-discnumber-tag-on-some-files/54742/5):
>
> Try it with: File\>Options\>Tags\>Mpeg and set the "Delete" Option to only APE. Then load the file again and try Edit\>Remove tag. If the DISCNUMBER is still there, go to the Extended tags dialogue and delete the field there and see if it works. If all this fails: check the file for consistency with MP3diags.
And why MP3tag is unresponsive ... could be that the files are locked by another program ... A stack overflow would probably lead to real crash including error log.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [February 12, 2022, 2:59pm UTC](https://community.mp3tag.de/t/pending-at-undo-remove-tag-operation/56287/3 "2022-02-12T14:59:01Z")
There was also a problem with Acronis Active Protection recently. Maybe related or anything running with similar side effects?
> [@Freezes when writing more than about 8 files at once](https://community.mp3tag.de/t/freezes-when-writing-more-than-about-8-files-at-once/56029/11):
>
> The culprit is found: Acronis Active Protection. When dactivated MP3TAG works whithout failure!! Thank you for all your advices!
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### Author:  [@enenkiel](https://community.mp3tag.de/u/enenkiel)
#### Post date: [February 12, 2022, 3:49pm UTC](https://community.mp3tag.de/t/pending-at-undo-remove-tag-operation/56287/4 "2022-02-12T15:49:13Z")
I will try to resolve the freeze - exactly according your proposal. I will give you feedback about the success/unseccess. Thabks for the quick support! Regards from Karlsruhe, Achim
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:29pm UTC](https://community.mp3tag.de/t/pending-at-undo-remove-tag-operation/56287/5 "2026-02-09T12:29:39Z")