I am facing this error message "The CSS Style is not supported because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled ". Done with run upgrade compile and deploy command but still not result

Refused to apply style from '' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.

enter image description here

  • your multi-store website ??? If yes, So you deploy command run particular language ... Jun 10, 2020 at 8:20
  • open your css file url, it is probably going to 404. run frontend deployment script otherwise your server is not supporting it. Follow this to fix 404 issue if deployment script not working magento.stackexchange.com/a/205474/31910 Jun 10, 2020 at 8:21
  • 4 store views But two are working and two are not Jun 10, 2020 at 8:42
  • First check that .htaccess exist in pub/static folder ? Jun 10, 2020 at 9:59

2 Answers 2


The issue is actually in Url Rewrite

1st Try First Check that rewrite module is enabled or not in your apache server if not then enable and restart server

sudo a2enmod rewrite
service apache2 restart

if You are Still Facing this Problem

go to etc/apache2/apache2.conf


<Directory /var/www/>
    Options Indexes FollowSymLinks
    AllowOverride None
    Require all granted


<Directory /var/www/>
    Options Indexes FollowSymLinks
    AllowOverride All
    Require all granted


service apache2 restart


if this doesn't work then most probably

Please Deploy Static Content with language Code Propel Something like that

php bin/magento setup:static-content:deploy -f en_GB // UK English
php bin/magento setup:static-content:deploy -f en_US // US English
php bin/magento setup:static-content:deploy -f pt_PT // Portoguese
  • Already done with this Jun 10, 2020 at 9:17
  • are you trying this on local or live ste?
    – User 69
    Jun 10, 2020 at 9:19
  • @HafsaZulfiqar check my Updated Anwer
    – User 69
    Jun 10, 2020 at 9:28

There can be following reason

  1. check if .htaccess exist in pub/static/ folder ? if not copy from magento download
  2. check that if rewrite is enabled or not if not than enable it.To check this check if login link works without index.php ?
  3. check if pub/static folder is writable ?

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