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Frequently Asked Questions (FAQs):

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Important: If your download is a .rar file, Windows' built-in file extractor often fails to open it or shows corrupted/incomplete files. Use WinRAR, 7-Zip, or a free online tool like extract.me to properly view or extract .rar archives before installing.

Here are some frequently asked questions related to WP Rocket that might help you while installing it on your WordPress site:

How to Install/Update a Plugin or Theme:

Steps for a Plugin:

If you have already downloaded the plugin file from our website, you can upload it manually by following these steps:

  1. Log in to your WordPress dashboard.
  2. Navigate to “Plugins” in the left-hand menu and click “Add New.”
  3. Click on the “Upload Plugin” button at the top of the page.
  4. Click the “Choose File” button and select the plugin file from your computer.
  5. Click the “Install Now” button to start the installation process.
  6. Wait for the installation to complete, and then click the “Activate” button to enable the plugin.

Steps for a Theme:

Installing a new theme in WordPress is also a simple process. Here are the steps you can follow:

  1. Log in to your WordPress dashboard.
  2. Navigate to “Appearance” in the left-hand menu and click on “Themes.”
  3. Click on the “Add New” button at the top of the page.
  4. You will see a list of popular themes, or you can click “Upload Theme” to upload a theme from your computer.
  5. If you choose a theme from the list, you can preview it first by clicking on the “Preview” button. If you like it, click the “Install” button to install it.
  6. If you upload a theme, click “Choose File” to select the theme file from your computer, then click “Install Now”.
  7. Once installed, click the “Activate” button to activate the new theme.
How to Fix style.css Not Found:
Please try to install “WP Rocket” as a plugin instead of a theme.

If you installed a plugin as a theme, it could also cause the “style.css not found” error. This is because plugins and themes have different file structures, and WordPress expects certain files to be in specific locations based on whether it’s a plugin or a theme.

How to Fix: PCLZIP_ERR_BAD_FORMAT (-10)
Please extract the downloaded file first — it contains additional files (such as the documentation or a license note) alongside the actual install package.

This error usually appears when the downloaded package is in .rar format. WordPress only supports installing themes/plugins in .zip format, so you'll need to extract the .rar file first and re-zip (or locate) the actual theme/plugin folder inside.

Windows' default file manager can't reliably open .rar files. Instead, use a dedicated tool:

  • WinRAR or 7-Zip (desktop apps, free for personal use) — right-click the file and choose "Extract Here."
  • extract.me or a similar browser-based extractor — useful if you can't install software on the current machine.

Once extracted, you should see a folder containing the theme/plugin files (often with a .zip inside it). Upload that inner .zip through the WordPress dashboard like any normal theme/plugin install.

"The package could not be installed. No valid plugins were found."

This usually means you uploaded the wrong file — either the outer .zip contains a folder full of extra files (docs, demo content, license file) instead of the actual plugin/theme files directly, or you accidentally zipped a single file instead of the whole plugin folder.

Open the downloaded archive and look for the actual plugin or theme folder inside (it usually matches the product name). Re-zip just that folder, or upload it directly if your download already contains it as a clean .zip.

"Are you sure you want to do this?" / link expired error

This is a WordPress security check (nonce) that expires after a period of inactivity on the upload screen. It usually happens if the upload took too long or the page was left open for a while.

Go back to Plugins > Add New (or Appearance > Themes > Add New), refresh the page, and try the upload again from scratch.

"Destination folder already exists" error

This means a plugin or theme folder with the same name already exists on your server — usually from a previous install or a failed update.

Delete the existing plugin/theme first (via the dashboard, or via FTP by removing its folder under wp-content/plugins/ or wp-content/themes/), then try the upload again.

Upload fails or times out on larger files

Shared hosting often limits upload size and execution time, which can cause large theme/plugin packages to fail mid-upload.

  • Ask your host to increase upload_max_filesize, post_max_size, and max_execution_time in PHP settings.
  • Alternatively, upload the extracted folder via FTP directly into wp-content/plugins/ or wp-content/themes/ instead of using the dashboard uploader.
Plugin/theme installed but not showing up or not working

A few common causes:

  • Caching — clear your site/browser cache and any caching plugin (WP Rocket, LiteSpeed Cache, etc.) after activation.
  • PHP version mismatch — check the product's minimum PHP/WordPress version requirements against your hosting environment.
  • Plugin conflicts — temporarily deactivate other plugins one by one to identify a conflict.
  • Missing dependencies — some themes/plugins require a companion plugin (e.g. a page builder) to be installed and activated separately.