Hi ,
>>I added the wireless LAN function and Direct Play function according to the online document, and restarted the server, but it didn't work.
For server wireless issue, some common issue like wireless card driver problems, miss-configuration of Wireless card etc. Sometimes the system wireless network card has not enabled.
As Tim said, please first check if the wireless adapter can be recognized in the device manager.
If your wireless NIC is displayed properly in Device Manager but the network icon still does not allow you to connect to wireless, then you probably need to update wireless drivers. To update your wireless driver open Device manager and locate your network card in the device manager. Choose Update Driver.
Here is an article talking about how to troubleshoot server wireless network, you could have a look:
https://www.technig.com/enable-wireless-windows-server/
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
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Best Regards,
Candy