On Windows, when you do DNS Flush, you may get the following error message: Could not flush the DNS Resolver Cache: Function failed during execution

If the above is what you get, don’t worry, all you need to do is to change some DNS settings:

1) Click Start
2) Click RUN
3) Type services.msc in the text box
4) Click OK or hit Enter
5) Scroll down to DNS Client and double click it
6) Select General tab and select Startup type: Automatic
7) Click Apply
7) Finally at Service Status Click Start (if it is stopped)

Hope this helps! :)