Fixed: Confirm Form Resubmission ERR_CACHE_MISS on Chrome

Need to fix confirm Form Resubmission well this isn’t an Error rather it’s more of a ‘feature’ of Chrome that acts as a warning
The purpose is to prevent users from resubmitting data repeatedly to avoid multiple transction from your credit card.
Luckily if you want to get rid of ERR_CACHE_MISS pop up message then read this post.

The confirm form resubmission (ERR_CACHE_MISS) pop-up message in Google Chrome is one of many other Chrome errors that users are dealing with. When you press the reload button after filling the form/ submit data a message will pop up telling you.

Note: If you press the reload button you will repeat any action this page previously performed.

What is Confirm Form Resubmission and Why it Pops-up in Google Chrome?

According to tech forums, such the Confirm Form Resubmission is not an error. Unlike, Google chrome helper which eats up your memory, it doesn’t create any issue in the chrome browser.

Form resubmission in Chrome is a feature that acts as a warning. The developer has built this feature to prevent browsers from accidentally duplicating POST actions on forms.

You are likely to face this pop-up on those sites that contain any type of form which includes.

Credit card forms for completing transactions
Sign up forms and login forms
Contact forms such as our contact pages
Search forms for searching a database
Or anything that has to do with add, edit or delete entries or files on a database

When a user enters data using a form, it is transmitted from browser to server. Meanwhile, if the user refreshes the page the content on the page gets duplicated. For example, if you are filling a form using a credit card for payment and you press submit button. The transaction takes some time to finish but you accidentally refresh the page you will get the dialogue Confirm Form Resubmission.
This is Why Confirm Form Resubmission message pops up.

Basically, it’s a PHP code framework that is running behind to prevent two transactions from happening at the same time. There are many users who find this dialogue message annoying. Luckily you can disable the ERR_CACHE_MISS message to prevent it from popping up permanently.

How To Fix Confirm Form Resubmission on Chrome (ERR_CACHE_MISS)?

There are several methods that help you fix this chrome so-called error. Still, you don’t need to stop the ERR_CACHE_MISS message as it works as an alert, especially where credit card payment is involved.

Method 1: Clear Google Chrome Browsing Data

To fix confirm form resubmission start with clearing browser history because once you visit any site the browser remembers that information, thus data duplication is possible. To avoid such a situation you can force the Chrome browser to remove/clear everything including history, cookies, cache memory, and auto-fill forms.

Follow these steps:

Open Google Chrome browser and click on the three dots placed on the top right corner of your browser.
Select More Tools → Clear browsing data from the menu or press Ctrl + Shift + Delete
Click on the Advanced Tab and select all the options to delete the data.
Now click on Clear Data.

Method 2: Use Google Chrome Properties

You can also change Chrome properties to fix this problem. Follow these steps for Chrome users having Windows PC.

Right-click on your Chrome shortcut, select properties
At the end of the target field, add: “-disable-prompt-in-repost” without the quotes i.e. after chrome.exe
So for example, my target field looks like: C:\Program Files (x86)\Google\Chrome\Application\chrome.exe -disable-prompt-on-re post. You can see that in the below-mentioned picture.
Then exit the browser and open it again (using that new shortcut)

Disable Confirm Form Resubmission From Chrome

Method 3: Use GET in place of POST Method

Another way to fix confirm form resubmission and permanently get rid of this error message is to make your form use GET instead of POST.

If you are using sensitive information like payment then always use POST because the performed task will not repeat evenb if you press Reload.
Use GET if you don’t mind repeating the task or the information is not confidential.

For Example:

//Remove POST
<form action="index.php?load=SEARCH" method="post">

//Use GET
<form action="index.php?load=SEARCH" method="get">

Method 4: Delete “no-store”

If you are using the form with a header using PHP code then you can prevent Confirm Form Resubmission error. That code usually is;

header (‘Cache-Control: no-store, no-cache, must-revalidate, max-age=0’);

Now to fix it, simply delete no-store from the header.
Now, refresh the page within the form.
Re-enter the form & refresh to check whether it’s fixed or not.

But this solution only works for those who have permission to edit the post as editor.

Method 5: Don’t Use Back Button and Update Google Chrome

As already said that Confirm Form Resubmission is not a bug or error. This message appears when google doesn’t cache posts. The simplest way to prevent form resubmission is to never use the back button. Once you submit the form close that tab or use another link on site.

According to Google Product Forum, most of the time confirm form resubmission issue resolves when users update chrome. So it’s a good idea to always check the current Google Chrome version and update it.

Method 6: Use POST/Redirect/GET Pattern (PRG)

This method is helpful for the website editor because when they require to interest a form in their site. They should add one page between that page and the actual page after it.

If they do it then the users will submit data while remaining on the page. Once users finish they can send data to the server. The browser will remember to GET as its last method instead of POST. So, we won’t face any problem even on accidentally refreshing the page.

For Example:

if(!empty($_POST['username'] && !empty($_POST['password'])) {
    $user = new User;
    $user->login($_POST['username'], $_POST['password']);

    if ($user->isLoggedIn()) {
        header("Location: /admin/welcome.php");
        exit;
    }
    else {
        header("Location: /login.php?invalid_login");
    }
}

Also, use

if (isset($_GET['invalid_login'])) {
    echo "Your username and password combination is invalid";
}

Method 7: Use Ajax Submit Button

By using the AJAX function of jQuery, the form won’t reload after submitting it. It can be done by adding the following function:

$.ajax({                                                               
type: "POST,"
URL: "bin/validation.php"
data: dataString,
success: function(){
//Whatever you want to do on successful submission
}
});
return false;

Method 8: Add A Tag Inside <head>Part

This method is helpful only if the website owner itself initiates requests and if the user has the source code of the web page.

<meta http-equiv="refresh" content="60; write_the_url_of_the_page_to_be_tested_over_here.html" />

How To Disable Confirm Form Resubmission on Firefox?

The form resubmission error is not restricted to the Chrome browser only. If you are using Firefox browsers and you may end up dealing with ERR_CACHE_MISS.

To fix confirm form resubmission on Firefox follow these steps: