This should do the job:
Open Run in Accessories, type Regedit and hit enter. Locate this:
HKeyCurrentUser\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\DnsCacheEnabled"=dword:0
You need to change the dword for DnsCacheEnabled to 0. After this, perform a soft reset.
If DnsCacheEnabled does not exist, create it as a DWORD value.
Good luck

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