theme installation failed error in JupiterX theme

In this article, you will learn how to fix the WordPress “Theme installation failed” error due to an old or deprecated PHP version. You will also explore how to update the PHP version from cPanel. We will guide you step by step on how to resolve this error while installing the JupiterX theme on WordPress. If you are installing any other theme in WordPress then you can also follow the same procedure. This solution is applicable to all WordPress themes.

Let’s begin the process:

  1. Click MultiPHP Manager in cPanel
  2. Apply the latest PHP version to a selected domain name
  3. Wait for a Success Message after updating the PHP version

Step 1 – Click MultiPHP Manager in cPanel

Firstly, open your website cPanel. The cPanel login credentials(username and password) are provided by your hosting provider. If you don’t remember those credentials, search for them in your email inbox. Still, if you are unable to find them then contact the customer support of your hosting provider. They will guide you.

Once you have logged into the cPanel, navigate to the Software section and click the MultiPHP Manager option.

Go to MultiPHP manager in Software section of cPanel

Step 2 – Apply the latest PHP Version on a Domain 

To proceed further, firstly, you have to select the domain name of your website. Secondly, select the latest PHP version from the “PHP Version” drop-down menu. Lastly, click on Apply button.

Apply latest php version by selecting a domain name

Step 3 – Alert for Successful PHP Version Updation

Next, you will see an alert at the top of your cPanel window showing a success message “Successfully applied PHP Version ‘#version no.‘ to the selected domain”.

This alert indicates that you have successfully upgraded the old PHP version to the new one. Congrats! ;)

fix theme installation failed error due to old PHP version

Now, install the theme again by navigating to the WordPress dashboard > Appearance > Themes > Add New > Upload Theme. As a result, you will foresee a success message “Theme Installed Successfully“.

At last, activate your theme and enjoy building your website in WordPress.


We hope you have successfully learned how to fix the theme installation failed error due to the old PHP version. You can easily resolve the WordPress errors such as “Package could not be installed” and “Theme installation failed” in the JupiterX theme by updating the PHP version from the website cPanel.

In order to discover how to update the PHP version from cPanel, you have to thoroughly read the above article. If you have any queries, feel free to comment down below. We would happily answer all of your queries.

You may be interested in our other articles related to WordPress and Website Speed Optimization.

Sharing is caring!