Your computer's DNS cache is diligently storing information about your Internet activities. It can be worthwhile to delete this regularly, because errors in the cache can also lead to problems when accessing websites. For example, a damaged DNS cache can generate an HTTP 400 error.
Why clear the DNS cache?
The so-called Domain Name System (DNS) ensures that the corresponding IP address and the host name (web address) are saved when you visit a website. This is automatically queried by the DNS server. In order to ensure that the IP addresses and DNS data do not have to be queried again and again from the servers, Windows stores the IP addresses and the associated data in the DNS cache. This happens regardless of the browser used and even if a private mode is used in the browser.
This means that all the server names of websites that you have recently visited are stored in the DNS cache. Not all website addresses are saved, but some information is saved. To protect your privacy, you should therefore empty the DNS cache regularly..
How to clear the DNS cache
1st step:
Open the " Run " window by pressing the [Windows] + [R] keys . Then enter " cmd " (without the quotation marks) and press the [Enter] key. 2nd step:
Enter " ipconfig / flushdns " in the new window . Pay attention to the correct spelling and the space between the g and the /. Confirm with [Enter] , then the DNS cache is deleted.