How To Install WordPress Theme or Plugin

Themes provide a beautiful layout for WordPress websites. Many people purchase the Best WordPress themes to enhance a nice look for their website. But sometimes these themes fail to work and displays Package could not be installed. The theme is missing the style.css stylesheet error. If this is the problem you are facing right now, then don’t fear it. We are here to assist you to fix this WordPress theme installation error.

Best Way to fix Theme install failed error in WordPress

In this vast world, For every problem, there is a solution. Alike in WordPress also, for every error or issue, there is a way to fix it. In this article, You will learn about why and when is the stylesheet missing error occurs and the best solutions to fix the error.

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When is the style.css missing error occurs in WordPress

The common missing style.css issue occurs when you are installing a WordPress theme. Also, the error message “The theme is missing the style.css stylesheet” is displayed when you uploading or activating the theme. Before going to know about the causes for the error, it is better to have some idea on the Style.css. So, read the below-provided information.

What is stylesheet style.css in WordPress?

Generally, WordPress hang utterly on the presentation styles specified in the CSS(Cascading Style Sheet). It provides almost infinite choices of layout options to the users in the form of themes. Every WordPress theme contains a style.css file that stores the style presentation information (like colors and layout of the theme) separately from the HTML structure.

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In addition to the CSS style information of your theme, the style.css file provides details about the Theme in the form of comments. This stylesheet also contains the style rules which define the formatting of pages for your website. This allows stiff control of your website layout and makes your pages faster and easier to update.

This stylesheet also contains the style rules which define the formatting of pages for your website. This allows stiff control of your website layout and makes your pages faster and easier to update.

Importance of style.css

WordPress recognizes the theme file only with the presence of the style.css. If this file is no there in your theme folder, then not at all it is considered as a theme file by WordPress.

Reasons for “Theme install failed” error in WordPress

It is always best to know the causes of the error. This will help us to find the best and easy way to fix the WordPress errors. Here, we have provided all the reasons for the cause of Missing style.css stylesheet error in WordPress. Go through them and find the cause for the rise of this ‘Package could not be installed. The theme is missing the style.css stylesheet error’ in your site.

Reason 1: Incorrectly installed theme

The stylesheet missing error in WordPress generally raises if the theme has been installed incorrectly.

Reason 2: uploading the entire zip file

When you download a theme, a zip file will be downloaded. This Zip file actually contains theme files along with the documentation and licenses from the Themeforest. If you upload the entire package, then the “Theme installation error” raises.

Reason 3: Non-WordPress Theme

Some people confuse WordPress themes and other themes. This raises the “Theme is missing the style.css stylesheet” error in WordPress.

Note: Most of the Low-Cost themes are not WordPress themes.

Reason 4: Misplaced Style.css file

The style.css file must be placed in the themes folder. But many WordPress users especially, the beginners misplace this style.css file in the subfolders of the themes folder. This would raise the issue of “Unable to install theme” in WordPress.

Reason 5: Assuming plugins as themes

Some WordPress plugins like GP premium provide all the functionalities like the theme. Many people assume these plugins as themes and upload them to the themes folder. This leads to the rise of Broken theme errors in WordPress.

Fixing the “Missing the style.css stylesheet error”

For many people, finding the appropriate solution is a difficult task. Don’t worry. We have already done that job for you. Here, we have provided all the possible solutions for you to fix the missing style.css stylesheet error in WordPress. Thoroughly check all the solutions mentioned below to fix Missing the style.css stylesheet error.

Solution 1: Upload only the theme file

Never attempt to upload the entire zip file that you get from the theme forest. The actual theme file hides inside the zip file.

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So, extract the zip file and find the theme file with its name “” file. For example, “” Now upload this file to your themes folder.

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Note: Before uploading the “” file, Unzip the file and make sure that it contains the style.css file and a bunch of PHP files.

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Reasons for “The package could not be installed. No valid plugins were found.” error in WordPress

If you try to upload and install the downloaded zip directly, it may give an error like “The package could not be installed. No valid plugins were found.”. Below are the steps to install the plugin correctly: –

1. First unzip the downloaded zip.

2. Locate the folder where you extracted the zip. Find the main Zip/Folder of the plugin. The main folder or zip contains a file ending with a .php extension with the same name as the plugin. For example, if you installing the Elementor plugin, it should have the file “elementor.php”.

3. Make a zip of that folder inside which you found the file with the same name as plugin & ending with .php extension. Upload and install it. If the main folder of the plugin is already inside the zip, then directly upload and install the zip.

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