Title: Optimise CSS Loading Error
Last modified: July 18, 2024

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# Optimise CSS Loading Error

 *  Resolved [gmackay1903](https://wordpress.org/support/users/gmackay1903/)
 * (@gmackay1903)
 * [1 year, 10 months ago](https://wordpress.org/support/topic/optimise-css-loading-error/)
 * I am having difficulty in getting the Optimise CSS Loading (manual) to work it
   is coming up with the following error message:
 * Failed to generate Critical CSS
 * An unexpected error has occurred. As this error may be temporary, please try 
   and refresh the Critical CSS.
 * Error:
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Foptimise-css-loading-error%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Support [Animesh Gaurav](https://wordpress.org/support/users/bizanimesh/)
 * (@bizanimesh)
 * [1 year, 10 months ago](https://wordpress.org/support/topic/optimise-css-loading-error/#post-17909056)
 * Hello there – is there nothing showing in Error message?
 * Could you please confirm you are not using any plugin that provide performance
   optimization features? And please also check there is no performance optimization
   option is enabled from your host side.
 * If you find any performance optimization feature in any other plugin or at your
   host, please make sure to temporarily disablng it and then try to Regenerate 
   Critical CSS.
 *  Plugin Support [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/)
 * (@erania-pinnera)
 * [1 year, 10 months ago](https://wordpress.org/support/topic/optimise-css-loading-error/#post-17925226)
 * Hi there, [@gmackay1903](https://wordpress.org/support/users/gmackay1903/),
 * Do you have updates about that, do you still need help? We usually close inactive
   threads after one week of no movement, but we want to make sure we’re all set
   before marking it as solved. Thanks!

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

The topic ‘Optimise CSS Loading Error’ is closed to new replies.

 * ![](https://ps.w.org/jetpack-boost/assets/icon.svg?rev=2818794)
 * [Jetpack Boost - Website Speed, Performance and Critical CSS](https://wordpress.org/plugins/jetpack-boost/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/jetpack-boost/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/jetpack-boost/)
 * [Active Topics](https://wordpress.org/support/plugin/jetpack-boost/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/jetpack-boost/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/jetpack-boost/reviews/)

 * 2 replies
 * 3 participants
 * Last reply from: [Stef (a11n)](https://wordpress.org/support/users/erania-pinnera/)
 * Last activity: [1 year, 10 months ago](https://wordpress.org/support/topic/optimise-css-loading-error/#post-17925226)
 * Status: resolved