Websites use DNS caching to obtain information about your past online queries. Your computer saves a temporary database of websites you've visited, which can affect your search results.
However, unauthorized IP addresses can be added to your DNS cache, or a technical glitch can corrupt your DNS cache. If your computer is infected with a virus, it can affect your DNS cache.
You receive a 400 BNad Request error when the DNS data malta mobile database stored locally on your computer is out of sync with the information on the Internet.
How to fix: Flush your DNS cache.
File size is too large
If you're uploading a file to your website when you receive a 400 Bad Request error message, it's probably because the file is too large and the server is rejecting it.
How to fix: Try uploading a lower-resolution version of the image. If the file size is still too large, you can also try uploading the image to an alternative cloud storage service.