# Rebaking posts fails when attachments aren't allowed anymore **URL:** \ **Category:** Support\ **Created:** [June 24, 2015, 10:20pm UTC](https://meta.discourse.org/t/rebaking-posts-fails-when-attachments-arent-allowed-anymore/30429 "2015-06-24T22:20:49Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![gerhard](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/gerhard/32/119479_2.png) [@gerhard](https://meta.discourse.org/u/gerhard)\ **Post date:** [June 24, 2015, 10:20pm UTC](https://meta.discourse.org/t/rebaking-posts-fails-when-attachments-arent-allowed-anymore/30429/1 "2015-06-24T22:20:49Z")
I’m not sure if this can be called a bug, but it is an unexpected behavior: **Steps to reproduce:** - Add a new file extension like `tif` to `authorized_extensions` - Attach a file with that extension to a post - Remove the file extension from `authorized_extensions` - Rebake all posts using `rake posts:rebake` **Expected behavior:** Rebaking of all posts should work, even though the previously attached file extension isn’t allowed anymore. **Actual behavior:** Rebaking of posts fails for all posts that have attachments which aren’t allowed anymore. They are stuck in the sidekiq retry queue. The error message is: ``` Job exception: Wrapped ActiveRecord::RecordInvalid: Validation failed: Original filename Sorry, the file you are trying to upload is not authorized (authorized extensions: jpg, jpeg, png, gif). ``` **Additional information:** This error happens only with images. It doesn’t seem to happen with other file types. Lowering `max_image_size_kb` also results in errors: ``` Job exception: Wrapped ActiveRecord::RecordInvalid: Validation failed: Filesize Sorry, the image you are trying to upload is too big (maximum size is 3072KB), please resize it and try again. ``` --- _[View the full topic](https://meta.discourse.org/t/rebaking-posts-fails-when-attachments-arent-allowed-anymore/30429)._