How can I do if the win10 campus client is not available?

First, you need to know the address of your school's campus network server. If you don't know, call your teacher at the school network technology center.
2, enter "Control Panel - Network and Internet - Network and Sharing Center" Click "“ set up a new connection or network" (this is the picture after I get it)

3. Select “Connect to Workspace”, then click “Next”

4, select “Use my INTERNET Connection (VPN)”, then in the <;INTERNET Address” field Enter the authentication server address (that is, your own school server address, do not tick the three boxes below)

5. Enter the ID (or student number) and password for the information portal authentication, click “Connect” , generate connection (VPN2 is written in the tutorial)

6, open "ld"; control panel - network and internet-network connection", change adapter
find your established "VPN connection" Right click on the property.

7. Set security tab:
“VPN type" for <; use IPSEC Layer 2 tunneling protocol (l2tp/IPSEC)>;
lSelect“data Add password type & rdquo; for “ optional encryption & rdquo;;
l select & ldquo; allow the use of these protocols & ldquo; in the unencrypted password (PAP) & rdquo;

8, dial-up connection Now dialing can be connected successfully, the campus client can be uninstalled, useless.
This will solve the problem perfectly