What is Confirm Form Resubmission and how to fix?

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Google Chrome is an awesome browser with great security features to protect our private data from miscreants and hackers on the Internet. But unfortunately, we may run into some errors sometimes, like this “confirm form resubmission”  or ERR_CACHE_MISS error. But these are completely fine, as these are not any kind of a serious error or bug but are just security features to protect us.

This occurs when we are submitting some kind of data through a form and the function the form is using to submit the data is POST. This error has been reported many times on different popular forums such as Superuser, Stackoverflow and Google Product forums. A user on the Superuser forum claims that the module which handles this backward and forward operation is so badly coded that the engineers at Google are afraid to rewrite it from scratch.

This is the resubmission error you must be facing
Or this warning from Chrome

The “confirm form resubmission” error or the “Err_cache_miss” error occurs on multiple websites where you perform actions like:

  • When you are purchasing anything online and after entering your credit card info suddenly your browser shows as “Confirm Form Resubmission”.
  • Filling out a contact us form on a website.
  • Filling out your pieces of information on different kinds of website forms which involves some kind of editing on the database, then you might also see this error.
  • Mostly happens when you submit a form with the method “POST” which then also posts back the same page and when you press enter again from the URL bar, it shows “Confirm Form Resubmission Error”.
  • Sometime even due to some cache errors you might end up adding the thing you want to buy two times in your cart. This error also occurs at this time.

What is Confirm Form Resubmission?

Confirm Form Resubmission happens if you refresh a page right after you submitted some type of data through a POST action and refreshing the page is causing it to be resubmitted. It is an error or a misfeature or a security feature which primarily occurs in the popular web browser Google Chrome.

Sending a POST request when submitting a form or pretty much just entering some kind of data, that is to be transferred to a database. Google says that they introduced this feature in their web browser Chrome, to help users avoid duplicating a POST request while entering data in a form on a website. Thus while saving them from paying for a thing twice or entering their email address for a newsletter twice.

What does Confirm Form Resubmission Mean?

What it means is it is an error or more correctly is a misfeature from Google Chrome which appears or prevents users from accidentally reproducing POST actions on data submit forms. A simple example of this would be entering your email address twice while entering it on a website newsletter form or simply buying stuff twice mistakenly while purchasing something online. The error may also appear as ERR_CACHE_MISS sometimes and it can be pretty annoying. Some users claim that this is a security feature from Google and it prevents users from mistakenly purchasing a certain thing twice and saves you money.

A simple example of this error or feature would be, Let’s suppose you are buying a book from an online store and when entering your shipping and billing address on the website form, a POST request is usually sent from your browser to the website and when information is successfully received by the website, it sents a success HTML response. Now if you press the submit button twice and the developers of the website have done a good job, then the odds of ordering the item twice is pretty low but you can’t always trust someone you don’t even know. So here comes the feature “Confirm Form Resubmission”, which will save your money and prevent you from getting charged twice for the same thing. Refer to WPShout for more on this topic.

How to avoid Confirm Form Resubmission?

Well, there are several ways in which you could prevent this “Confirm Form Resubmission” warning from appearing again. There are different methods if you are a visitor of the website and different methods if you are the developer of the website. If you are a developer and you are experiencing this with your code, then better check forums like StackOverFlow and similar ones.  Below are a few methods mentioned which we found to be solving the problem for a visitor-

Add a phrase along with Chrome.exe

This method does seem to be working all the time but still works sometimes for some people, so might as well give it a try, cause it will only take a min to set up. You simply have to add a phrase after the Chrome browser shortcut on your desktop –

  • Firstly, Find the Chrome browser shortcut on your desktop or home screen.
  • Right-click on the shortcut and click on ‘Properties’.
  • Then in the ‘Target‘ field add this phrase without the quotes ‘-disable-prompt-on-repost‘, the same way its shown in the image below.
  • Then save it by clicking ‘OK’. Now open Chrome from the newly created shortcut.
Enter the phrase like its shown here

After saving the phrase to your shortcut’s target field, your target path should look something like this C:\Users\[Your Username]\AppData\Local\Google\Chrome\Application\chrome.exe -disable-prompt-on-repost. Now gone and try browsing that website again, where you got the confirm form resubmission warning in the first place.

Disable Browser Extensions

We all like to make our browsing experience much easier and simpler and for that browser, extensions help us a lot. There are millions of extensions just for the Chrome browsers for all kinds of needs for everyone. But sometimes some extensions can cause problems with the websites we are visiting.

Alright, so head over to your extension manager on your Chrome browser(you can just right-click on any extension and then click on Manage Extensions) and then one by one remove the extensions and try visiting that website or webpage where this prompt or warning was being shown when you performed that particular action which caused the prompt in the first place. And as you remove them one by one, you will get to know the extension which was causing the error. Then remove that extension and then install back all the extensions which were not causing any problems and you can continue to keep using them as your error has been resolved.

Clear Chrome Cache

Alas, if none of the above two solutions worked for you, then just try clearing your browser cache. A lot of times old cache in your browser can also cause this error, as your cache needs to be cleared from time to time so that your browser can properly function. Websites and their codes change from time to time so old cached data might not work right with websites all the time so clearing your browser cache should solve this error for you. Here’s how you can clear cache in your Google Chrome browser –

  • Open your browser settings from among the options from the top right side of your browser.
  • Then click and expand the advanced settings and under the ‘Privacy and security’ section click on the ‘Clear browser data’ option.
  • Then a new window will open up, inside that select the ‘Cached images and files’ option and then click on the ‘Clear data’ button. Done! your Chrome cache is cleared now. Now try visiting and trying to do that payment or whatever irked this annoying error.
Clear your Chrome cache by selecting this option

Disable Confirm Form Resubmission on Firefox

Firefox may also show this error sometimes, as we earlier said that this is a security feature and should not be considered as an error. Anyways to prevent “ERR_CACHE_MISS” from happening again on Firefox, just open up your Firefox settings and then the Privacy & Security tab and clear all your cache. Then restart your Firefox browser and give it a try again, this time you shall not see that error or security feature again.

Hope these solutions helped, if not please let us know in the comments section.

{Solved}How to Fix Confirm Form Resubmission Error
Article Name
{Solved}How to Fix Confirm Form Resubmission Error
What Does Confirm Form Resubmission Mean and How to avoid it? Facing confirm form resubmission err_cache_miss? Learn to solve this error

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