discussion Guide WordPress WordPress and .htaccess: Fixing CORS and Iframe Issues (2025 Guide)

[CL4Y]

🛠️ WordPress and .htaccess: Fixing CORS and Iframe Issues Guide​

When using iframes or trying to access content from a different domain, you may encounter common errors such as "iframe issue" or "CORS error".
These errors occur due to browser security restrictions. Fortunately, you can easily fix these issues in WordPress by adding a few lines of code to your .htaccess file.

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Step 1: Fixing the Iframe Issue​

Iframes allow embedding one webpage inside another. However, this process can be blocked by the X-Frame-Options HTTP header.
If you encounter this issue on your site, add the following code at the top of your .htaccess file:

Header always unset "X-Frame-Options"

This code allows the browser to display your page within an iframe by removing the restriction caused by the header.

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Step 2: Fixing the CORS Error​

CORS (Cross-Origin Resource Sharing) errors occur when JavaScript on one site tries to access resources (such as fonts, APIs, or images) from another domain.
This is a security feature enforced by modern browsers.
To fix this and tell the browser which resources are allowed, you can add one of the following code blocks to your .htaccess file:

Option 1 (More Comprehensive):​

Header always unset "X-Frame-Options"
Header always unset "X-XSS-Protection"
Header always unset "X-Content-Type-Options"
Header always unset "Referrer-Policy"
Header always unset "X-Powered-By"
Header set Referrer-Policy "strict-origin-when-cross-origin"

This code removes several restrictive security headers and sets a Referrer-Policy to enable secure cross-site communication.

Option 2 (Simpler):​

Header always unset "X-Frame-Options"
Header always unset "X-XSS-Protection"
Header always unset "X-Content-Type-Options"
Header always unset "Referrer-Policy"
Header always unset "X-Powered-By"

This code also removes restrictive headers but does not set a Referrer-Policy.
Depending on the type of error you’re facing, this may be sufficient.

 

[CL4Y]

In either case, after adding these codes to your .htaccess file, you may need to clear your site's cache for the changes to take effect. If the problem persists, I recommend contacting your hosting provider or the developer of the theme/plugin you are using.