[Norbert Malischewski]

csv-file import reports the error: ERROR: Aus Sicherheitsgründen ist dieser Dateityp nicht erlaubt. function.php in theme is added with mimetype, also tested with define (‘ALLOW_UNFILTERED_UPLOADS’, true); in wp-config.php.

Why doesn’t it work?
please report any hint to normal@t-online.de
Norbert

[Norbert Malischewski]

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[Steven Zahm]

@ Norbert

If you are receiving this error, this is more than likely being caused by the server and its restrictions or its file mime type handling is incorrectly configured. You would have to consult your webhost to get that fixed.

That said, it is likely much easier to following the instructions to in this FAQ on how to deal with the “ERROR: Sorry, this file type is not permitted for security reasons.” error message.

Hope this helps!

[Steven Zahm]

@ Norbert

The WordPress security update to 4.7.1 seems to break the ability to load several file types (mp3, some docx, etc). Unintended consequence no doubt. At this point, I am not sure what the fix is, but I am working on it.

[Karsten Hollop]

Disabling The Filtering

This process of disallowing certain types of files in WordPress is known as filtering. You can simply disable this filtering by using following code. You have to add it in your wp-config.php.

define(‘ALLOW_UNFILTERED_UPLOADS’, true);

[Steven Zahm]

@ Norbert

It seems that the WordPress dev are aware of this issue and are working to fix it with 4.7.2. The WordPress Trac ticket is here:

https://core.trac.wordpress.org/ticket/39550

Until they have a fix and release it, they are recommending installing this plugin:

https://wordpress.org/plugins/disable-real-mime-check/

Can you please install and activate this plugin and then try to import your CSV file?

[Norbert Malischewski]

@Steven
There is a work-around by using:

/** Wieder auskommentiert, bei Bedarf wieder einschalten, Kommentarende beachten
16.01.2017 */
/** Sets up WordPress vars and included files.
require_once(ABSPATH . ‘wp-settings.php’);

/** Alle Dateitypen zum Hochladen erlauben 13-01-2017
define (‘ALLOW_UNFILTERED_UPLOADS’, true);
/** Sets up WordPress vars and included files. */

in wp-config.php

[Steven Zahm]

@ Norbert

There are downfalls and potential security issues with disabling the filter. It’s best to use the plugin suggested by the WP devs until 4.7.2 is released with a fix that broke file uploading in WP 4.7.1 security update.

[Steven Zahm]

@ Norbert

I’ve read and reread the WordPress Trac ticket about this issue. I’m not certain if this is actually going to be considered a bug which requires fixing.

So…

I just released an update to CSV Import, version 1.4.2, which address the change in WordPress 4.7.1 in a secure way which should now allow you to upload CSV files again.

This update to CSV Import will (err should) work regardless of any changes that may or may not come with WordPress 4.7.2 in regards to this issue.

Hope that helps, apologies for the trouble!

ps. If you installed the Disable Real MIME Check plugin, you should deactivate and delete it.

pss. If you see this same error in the WordPress Media Library when uploading files, then you will still need the Disable Real MIME Check plugin installed. The change I made to CSV Import will not affect other plugins or WordPress when uploading files which throw this error.

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