Chrome ERR_CACHE_MISS — Confirm Form Resubmission & Cache Errors

Fix Chrome ERR_CACHE_MISS error which appears when reloading a page that was loaded via POST request, preventing form resubmission and showing 'Confirm Form Resubmission'. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: ERR_CACHE_MISS occurs when Chrome cannot serve a page from cache and needs to resubmit a POST request. Most commonly seen as 'Confirm Form Resubmission' dialog when pressing Back or Refresh after a form POST. This is a browser safety feature to prevent duplicate form submissions (double charges, duplicate orders). Web developers can prevent this with the Post/Redirect/Get (PRG) pattern. Clearing cache may fix persistent ERR_CACHE_MISS on pages that should not show it. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Pressing Back or Refresh on a page loaded via form POST submission. Web application not implementing Post/Redirect/Get pattern. Browser cache corrupted, unable to retrieve cached POST response. Browser extension interfering with cache behavior. Service Worker caching strategy not handling POST requests. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Click 'Continue' in the dialog to resubmit the form (safe for idempotent operations). Navigate to the page using the URL bar instead of Back button. Clear Chrome cache: Settings > Privacy > Clear browsing data > Cached images and files. Disable extensions temporarily to check for interference. For developers: implement PRG pattern — redirect with 303 after processing POST. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Browser Errors collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.