How to Fix ‘ERR_CACHE_MISS’ (Confirm Form Resubmission) in Google Chrome

Encountering the ERR_CACHE_MISS error in Google Chrome—frequently accompanied by the message “Confirm Form Resubmission”—occurs when the browser attempts to submit previously entered data to a web page but cannot retrieve the requisite cached header or session tokens. Rather than silently executing duplicate transactions, Chrome pauses execution and prompts the user to verify the transmission.

While this mechanism prevents unintentional financial duplicate billing or form re-entry, recurring instances across normal browsing indicate stale browser cache, misbehaving extensions, corrupted socket pools, or misconfigured DNS caching on Windows or macOS.

Potential Cause	Underlying Mechanism	Primary Resolution
Stale Form Headers	POST requests lack required session verification from local disk cache	Hard reload or clear browsing cache partition
Faulty Ad-Blocker / Extensions	Aggressive content filters intercept header exchanges	Audit extensions via Incognito mode
Corrupted Chrome Sockets	Internal TCP socket pool becomes desynchronised	Flush internal sockets via chrome://net-internals
DNS / Network Cache Conflicts	Operating system resolver retains deprecated routing paths	Flush OS DNS cache and reset Winsock

Method 1: Perform a Hard Reload and Bypass Cached Content

When a web page fails immediately after submitting a search query or navigation filter, executing a hard reload forces Chrome to discard existing request headers and fetch fresh assets directly from the web host.

1. Open the problematic web page in Google Chrome.
2. Press Ctrl + F5 on Windows or Cmd + Shift + R on macOS.
3. Alternatively, open Chrome Developer Tools by pressing F12 (or Cmd + Option + I).
4. Right-click the circular Reload icon adjacent to the address bar.
5. Select Empty Cache and Hard Reload from the contextual menu.

Method 2: Clear Google Chrome Browsing Cache Partition

Accumulated temporary web files and outdated application cache partitions frequently desynchronise form verification states. Clearing these files restores expected browser behaviour.

1. In Chrome, click the three-dot menu icon in the upper-right corner and select Settings.
2. Navigate to Privacy and security in the left navigation sidebar.
3. Click Delete browsing data.
4. Switch to the Advanced tab and set the time range dropdown to All time.
5. Select the checkboxes for:
   • Cookies and other site data
   • Cached images and files
6. Click Delete data and restart Chrome.

Method 3: Flush Chrome Sockets via Net-Internals

Chrome maintains its own internal connection pool and DNS cache independent of the host operating system. Corrupted socket states prevent POST requests from completing successfully.

1. In the Chrome address bar, type chrome://net-internals/#sockets and press Enter.
2. Locate the Close idle sockets button and click it once.
3. Click the Flush socket pools button immediately below.
4. Next, type chrome://net-internals/#dns into the address bar.
5. Click Clear host cache to dump Chrome’s temporary DNS resolution entries.
6. Restart the browser completely.

Method 4: Test in Incognito Mode and Disable Conflicting Extensions

Third-party privacy shields, ad blockers, and cookie management extensions frequently intercept network headers or block tracking tokens required for form submission.

1. Press Ctrl + Shift + N (or Cmd + Shift + N on Mac) to open a new Incognito window.
2. Navigate to the URL that triggered the ERR_CACHE_MISS error and repeat the form submission.
3. If the error does not manifest in Incognito, an extension is responsible.
4. Type chrome://extensions in the address bar and press Enter.
5. Toggle off all installed extensions, then re-enable them one by one while testing the page to isolate the culprit.

Method 5: Flush Operating System DNS Cache and Network Stack

If the error persists across multiple browsers on the same workstation, clearing the operating system’s DNS resolver cache eliminates stale route entries.

1. On Windows 11, press the Windows Key, type cmd, right-click Command Prompt, and select Run as administrator.
2. Execute the following commands sequentially, pressing Enter after each line:
   ipconfig /flushdns
ipconfig /registerdns
ipconfig /release
ipconfig /renew
netsh winsock reset
3. Restart your computer to finalise the network stack reset.

Preventing Future Cache Miss Errors

To minimise ERR_CACHE_MISS alerts during critical workflows such as online banking or checkout processes, avoid utilising the browser’s back button immediately after making a payment. Furthermore, ensure Chrome is updated to the latest stable release via Settings > About Chrome to benefit from upstream protocol enhancements.