Title: Cannot upload .css files
Last modified: June 10, 2021

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# Cannot upload .css files

 *  Resolved [elizoliva](https://wordpress.org/support/users/elizoliva/)
 * (@elizoliva)
 * [5 years ago](https://wordpress.org/support/topic/cannot-upload-css-files/)
 * I have created the following custom upload type:
 * Cascading Style Sheet text/css .css
 * It has been enabled, caches have been cleared. When I attempt to upload a file
   with the .css extension, I continue to get the error:
    _“mailingstyles.css” has
   failed to upload. Sorry, this file type is not permitted for security reasons.
 * Anything else I should be doing?

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [elizoliva](https://wordpress.org/support/users/elizoliva/)
 * (@elizoliva)
 * [5 years ago](https://wordpress.org/support/topic/cannot-upload-css-files/#post-14543468)
 * Nevermind, I discovered the [MIME File Checker](https://www.htmlstrip.com/mime-file-type-checker)
   mentioned on other posts, and realized the MIME type was incorrect.
 *  [Sanjeev Aryal](https://wordpress.org/support/users/sanzeeb3/)
 * (@sanzeeb3)
 * [4 years, 12 months ago](https://wordpress.org/support/topic/cannot-upload-css-files/#post-14544947)
 * I’m glad you figured out the solution. Yes, that’s a nice tool to figure out 
   the correct MIME type.
 * In case it helps, you can [add multiple MIME types](https://a.supportally.com/s59IFx)
   for a file separated by a comma.
 * Have a good one! 🙂

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Cannot upload .css files’ is closed to new replies.

 * ![](https://ps.w.org/file-upload-types/assets/icon-256x256.png?rev=3547680)
 * [File Upload Types by WPForms](https://wordpress.org/plugins/file-upload-types/)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/file-upload-types/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/file-upload-types/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Sanjeev Aryal](https://wordpress.org/support/users/sanzeeb3/)
 * Last activity: [4 years, 12 months ago](https://wordpress.org/support/topic/cannot-upload-css-files/#post-14544947)
 * Status: resolved