DNS Error.... Please flush your DNS.



Flush Windows DNS Cache

flush windows dns cache

You need to open an administrative command prompt windows. In Windows 8, to do so, Press Win+C in combination to bring up the ‘Charms bar’. In its search box, type cmd. Then, right-click on it and choose ‘Run as administrator’ option. Alternatively you can also open an elevated command prompt from the WinX menu.

Next, type the following and hit enter:

ipconfig /flushdns

You should be able to see a confirmation dialog window:

Windows IP Configuration. Successfully flushed the DNS Resolver Cache.


Turn Off or Turn On DNS Cache

To turn off DNS caching for a particular session, type net stop dnscache and hit Enter.

To turn on DNS caching, type net start dnscache and hit Enter.

Of course, when you restart the computer, the DNC caching will in any case be turned on.



If you can not access to view JI home page or the applications, please try to flush the DNS. (for windows)
Close your browsers ,open “Run”(WIN+R), input “ipconfig /flushdns”, press “Enter”. Visit the websites again.
If it doesn’t work, change your hosts file, Location:(C:\Windows\System32\drivers\etc\hosts) www.umji.sjtu.edu.cn umji.sjtu.edu.cn

If you are using MAC OS, please change your hosts file:
$sudo vi /etc/hosts
add the text into hosts www.umji.sjtu.edu.cn umji.sjtu.edu.cn