When you get the “HTTP Error 304 Not modified” error in Google Chrome, Mozilla Firefox, or Microsoft Edge, there can be lots of reasons why you’re getting this error. The HTTP Error code 304 means redirection, technically. It could be that the DNS has some issues or the cache is already reusing the existing information to look for a website or it could also be that your browser might be infected.
In this post, we will show you what you can do to fix the “HTTP Error 304 Not modified” error when you are not able to open a website on your browser. Here are the exact details of the error message:
“This status code is returned if the client has already downloaded resources since the last visit and is displayed to notify the client browser that the requested resources is already stored in the browser cache which hasn’t been modified.”
Follow each one of the given fixes below to resolve the issue.
The first thing you can try is clearing the browsing data on your browsers.
There are some websites that don’t resolve since the DNS in your computer still remembers that old IP address. And so you need to flush the DNS as well as reset the TCP/IP on your computer.
After you key in the commands listed above, the DNS cache will be flushed and the TCP/IP will reset.
Changing your DNS to Google Public DNS might also help you in fixing the “HTTP Error 304 Not modified” error. To do so, follow the steps below.
You might also want to run the Cleanup Tool in Chrome if you are using this browser as well as disable all the extensions as some of them, if not all, might be the reason why you’re getting the “HTTP Error 304 Not modified” error.

Fear not because we had this issue and tried several things in order to overcome the problem and after some time here is a list of what can you do if you are facing this exact issue. The list is written from most simple solutions to more complex ones and it is advisable to follow it as presented. That being said, let's dive into solving the problem.
HKEY_CURRENT_USERSoftwareMicrosoftWindows NTCurrentVersionWindows
net stop wuauserv net start cryptSvc net start bits net start msiserver
net start wuauserv net start cryptSvc net start bits net start msiserver
“SysFader: iexplore.exe – Application Error The instruction at “0×00000000″ referenced memory at “0×00000000″. The memory could not be “read”.”
Error Causes