ERR_CACHE_MISS — What It Means & How to Fix It

What Does This Error Mean?

ERR_CACHE_MISS appears when you try to go back to a page that contained a form — like a checkout page or search results — and the browser needs to resubmit the form data. The page requires data that was only submitted once (such as payment details or a search query), and that data is no longer stored. Chrome is asking the page to confirm whether it should resend the data. It is not a website being broken — it is Chrome being cautious about re-sending form information.

Affected Models

Google Chrome
Microsoft Edge
Chromium-based browsers
Windows
macOS
Android

Common Causes

You navigated back to a page that was loaded through a form submission (POST request)
The page requires data that was only sent once and is no longer cached
The website does not have a proper back-navigation setup for form pages
Your browser's cache was cleared while you were in the middle of a session
The website uses strict no-cache headers that prevent the browser from storing the page

How to Fix It

Press F5 or click the Reload button on the error page. Chrome will ask if you want to resubmit the form data. Click 'Continue' to reload the page.

This is the simplest fix. Chrome is just asking permission to resend the form data.
Use Ctrl+Shift+Delete to clear your browsing data, including cookies and cache. Then navigate back to the original starting page and go through the process again.

Starting fresh from the beginning of the process is more reliable than trying to reload a mid-session page.
Instead of using the browser's back button, use the website's own navigation links. For example, go to the website's homepage and redo your search or process from scratch.

Many websites are not designed to support browser back-button navigation through multi-step forms.
If you see this error frequently on a specific website, try a different browser like Firefox or Edge to see if the behaviour is the same.

Some websites behave differently in different browsers due to how they handle caching.
Check if the website has a dedicated 'Back' or 'Edit' button and use that instead of your browser's back button. Many checkout and form pages offer this.

Website-native navigation is always more reliable than the browser's back button for multi-step forms.

When to Call a Professional

If you are a web developer and your users frequently see this error, implement a Post/Redirect/Get (PRG) pattern on your form pages. This prevents the form resubmission issue entirely by redirecting after a successful POST request.

Frequently Asked Questions

Is ERR_CACHE_MISS dangerous?

No, it is not a security threat or a sign anything is broken. It is Chrome's way of handling a situation where going back in history would require resubmitting data (like a payment form). Chrome is being cautious by not automatically resubmitting sensitive information.

Why does this mostly happen on shopping or checkout pages?

Shopping carts and checkout processes use form submissions (POST requests) to send your data to the server. When you go back, Chrome realizes it would need to resend that data — which could mean processing a payment twice. So it warns you first. A well-designed website uses redirects after payments to prevent this.

Does reloading the page risk submitting a payment twice?

Possibly, depending on how the website is built. A well-built checkout page uses a one-time token or Post/Redirect/Get to prevent double submissions. If you are unsure, go to your account page and check if an order was already created before reloading. Do not reload if you think your payment already went through.