How to Fix ERR_CACHE_MISS in Chrome: Complete Guide

Browser Beginner 7 min read Published July 17, 2026

ERR_CACHE_MISS is a Chrome-specific error that surfaces when the browser tries to load a page from its local HTTP cache but cannot locate a valid cached copy to use. Instead of silently reloading the resource, Chrome halts and displays a near-blank page carrying the message “Confirm Form Resubmission”, asking you to confirm before resending data that may have been part of a POST request. The error is not a network failure in the traditional sense — the server is usually reachable — but a caching-layer mismatch that breaks the normal back and forward navigation flow.

This guide explains exactly what ERR_CACHE_MISS means, why it happens, and how to fix it on both the client side (your browser and operating system) and the server side (response headers and application design). Most cases are resolved within a minute by clearing the browser cache or correcting Cache-Control headers, but persistent occurrences point to a corrupted disk cache or a browser profile that needs to be rebuilt.

What is ERR_CACHE_MISS?

ERR_CACHE_MISS is a Chromium error code thrown by the browser’s networking layer when it expects to serve a page from the HTTP cache but cannot find a usable cached entry. The symptom users actually see is a dialog titled Confirm Form Resubmission with two buttons — Reload and Cancel. This prompt appears because the page stored in the browser’s session history was originally loaded through a POST request, and Chrome refuses to silently replay a POST without explicit consent. Replaying a POST could duplicate a side effect, such as placing an order twice or posting a comment a second time.

The error most often surfaces when you press the Back or Forward button, or when you reload a tab that has been sitting idle. Under normal operation Chrome would replay the cached POST response from its session history; but when that cache entry is missing, corrupted, or has been evicted, the browser cannot reconstruct the page and falls back to asking you to resubmit. Understanding this distinction — the problem is about cache state, not network reachability — is the key to fixing it efficiently rather than chasing phantom server outages.

Common Causes

Several distinct conditions can produce ERR_CACHE_MISS. Identifying which one applies to your situation is the fastest route to a fix:

Step-by-Step Fix Guide

Work through these six steps in order. The first three resolve the vast majority of cases on the client side; steps 4 and 5 address server-side causes; step 6 is the last resort for a chronically broken profile.

Step 1: Clear Chrome’s Cache and Browsing Data

The fastest remedy is to wipe the cached files that Chrome can no longer read consistently. Press Ctrl+Shift+Delete (or Cmd+Shift+Delete on macOS), set the time range to All time, tick Cached images and files, and clear. If you prefer the command line, you can also delete the cache directory directly while Chrome is fully closed:

# Open Chrome's Clear Browsing Data dialog directly
chrome://settings/clearBrowserData

# Windows — delete the on-disk cache folder (close Chrome first)
rd /s /q "%LocalAppData%\Google\Chrome\User Data\Default\Cache"

# macOS
rm -rf ~/Library/Caches/Google/Chrome/Default/Cache

# Linux
rm -rf ~/.cache/google-chrome/Default/Cache

Relaunch Chrome and revisit the page. If the error is gone, the cause was a corrupted or stale cache entry.

Step 2: Flush the Operating System DNS Cache

A stale DNS entry can send Chrome to a cached version of a page served from a different origin, confusing the cache layer. Flush the OS DNS resolver cache after clearing the browser cache:

# Windows
ipconfig /flushdns

# macOS
sudo dscacheutil -flushcache
sudo killall -HUP mDNSResponder

# Linux (systemd-resolved)
sudo resolvectl flush-caches

# Linux (nscd)
sudo systemctl restart nscd

Step 3: Hard Reload to Bypass the Cache

A hard reload forces Chrome to ignore its cache for a single request, which is enough to confirm whether the cache was the culprit. Use a keyboard shortcut, then clear Chrome’s internal host and socket caches to remove leftover state:

# Chrome keyboard shortcuts to bypass the cache
# Windows / Linux:  Ctrl + F5   or   Ctrl + Shift + R
# macOS:            Cmd + Shift + R

# Clear Chrome's host resolver cache and socket pools
chrome://net-internals/#dns
chrome://net-internals/#sockets

If the page loads cleanly after a hard reload but breaks again on the next back-navigation, the issue is almost certainly on the server side — continue to step 4.

Step 4: Inspect and Correct Server Cache-Control Headers

If you control the server, inspect the response headers Chrome receives. A no-store or no-cache directive on a page that should be cacheable will trigger ERR_CACHE_MISS on every back-navigation:

# Inspect response headers with curl
curl -I https://example.com/form-page

# Show only caching directives
curl -sI https://example.com/form-page | grep -i "cache-control"

# Headers to look for:
#   Cache-Control: no-store      -> remove for cacheable pages
#   Cache-Control: no-cache      -> forces revalidation every time
#   Cache-Control: max-age=0     -> entry is immediately stale

In Nginx, allow caching for a GET-rendered page:

# nginx.conf — make a page cacheable for one hour
# location /form-page {
#     add_header Cache-Control "public, max-age=3600";
# }

Step 5: Apply the Post/Redirect/Get (PRG) Pattern

The most robust server-side fix is to stop serving the result of a POST directly. Instead, after handling the POST, redirect the browser to a plain GET page. The GET response is cacheable, so back-navigation no longer triggers the resubmission prompt:

# Express.js — redirect after POST so the result is a cacheable GET
# app.post('/submit', (req, res) => {
#   // ...process form...
#   res.redirect(303, '/success');   // 303 See Other -> GET /success
# });

# Django equivalent
# def submit(request):
#     # ...process form...
#     return redirect('/success')

# PHP equivalent
# header("Location: /success", true, 303);
# exit;

The 303 See Other status is the correct choice here because it explicitly converts the follow-up request into a GET, which the browser is then free to cache.

Step 6: Reset or Recreate the Browser Profile

If ERR_CACHE_MISS appears on every site, including ones that have always worked, the Chrome profile itself is damaged. Back up the existing profile and let Chrome build a fresh one:

# Close Chrome completely first

# Windows — rename the Default profile folder
ren "%LocalAppData%\Google\Chrome\User Data\Default" Default.bak

# macOS
mv ~/Library/Application\ Support/Google/Chrome/Default Default.bak

# Linux
mv ~/.config/google-chrome/Default Default.bak

Relaunch Chrome. A new Default profile is created automatically. If the error disappears, the old profile’s cache index was corrupted beyond repair.

Browser Diagnostic Commands

When the basic fixes do not resolve the issue, use Chrome’s internal diagnostic URLs and shell commands to pinpoint where the cache lookup fails. These commands work across operating systems; the chrome:// URLs are entered directly into the address bar.

# 1. View Chrome's internal HTTP cache entries
chrome://cache

# 2. Clear the host resolver cache inside Chrome
chrome://net-internals/#dns

# 3. Flush socket pools (drops keep-alive connections)
chrome://net-internals/#sockets

# 4. Capture a network log for the failing request
chrome://net-export/

# 5. Inspect the server's caching headers from the command line
curl -sI https://example.com | grep -i "cache-control"

# 6. Verify the disk cache directory is healthy (Windows)
dir "%LocalAppData%\Google\Chrome\User Data\Default\Cache"

# 7. Check the Chrome cache size limit and eviction settings
chrome://settings/?search=cache

A network export captured through chrome://net-export/ will show the exact ERR_CACHE_MISS event with the request URL and the cache lookup result, which tells you definitively whether the miss is due to eviction, corruption, or a no-store header.

Quick Reference Table

Symptom / Log Message Root Cause Fix
“Confirm Form Resubmission” on Back button POST response was never cached Apply the PRG pattern (303 redirect to a GET)
Error appears once, then clears Corrupted or stale cache entry Clear cached images and files (Ctrl+Shift+Del)
Error on every reload of one page Cache-Control: no-store header Remove no-store for cacheable pages
Error after being logged out Expired server session invalidated the entry Re-authenticate; cache session-scoped pages cautiously
Error only in one Chrome profile Corrupted browser profile or cache index Reset or recreate the profile (Step 6)
Error persists across all sites Disk cache corruption / full disk Delete the Cache folder; check disk health

FAQ

Why does ERR_CACHE_MISS only appear after submitting a form?

Because the page was loaded via a POST request, and Chrome intentionally does not cache POST responses unless the server sends explicit freshness headers. When you press Back, Chrome has no cached copy to replay, so it asks you to confirm a resubmission rather than silently repeating an action that could have side effects.

Will clearing my cache log me out of websites?

Clearing cached images and files alone does not log you out. However, if you also tick Cookies and other site data, your sessions will end and you will need to sign in again. To avoid surprises, clear only cached files when troubleshooting ERR_CACHE_MISS.

Is ERR_CACHE_MISS caused by malware or a security problem?

No. ERR_CACHE_MISS is a client-side caching state error, not a sign of compromise. That said, aggressive antivirus tools or malicious extensions that intercept web requests can corrupt the cache; if you suspect interference, test in an incognito window with extensions disabled.

How do I stop Chrome from asking to confirm form resubmission permanently?

The reliable fix is server-side: implement the Post/Redirect/Get pattern so form submissions redirect to a GET page. On the client side, you can disable the prompt via the --disable-prompt-on-repost launch flag, but this only hides the warning and does not address the underlying cache miss.

Conclusion

ERR_CACHE_MISS is best understood as a cache-state problem, not a connectivity problem. In the majority of cases it is resolved in under a minute by clearing Chrome’s cached files and flushing the DNS cache. When it recurs on a specific page, the cause is usually a POST response that was never cacheable or a Cache-Control: no-store header — both fixed cleanly with the Post/Redirect/Get pattern. Only when the error appears across every site should you suspect a corrupted profile or disk cache, at which point resetting the profile rebuilds a healthy cache from scratch. Apply the six steps in order and the “Confirm Form Resubmission” prompt will stop interrupting your navigation.

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