The network connection icon has disappeared. The solution

suddenly found out that the network connection icon is missing because of the volume icon. After re-checking the volume icon, the network connection icon is back. But after restarting, the volume icon disappears again, and you must re-check it. Who made it too poisonous? Solution:
(1) First stop the "Service" SSDP Discovery Service service. (Do you have no idea)
(2) Open the registry, find HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\
CurrentVersion\\ShellServiceObjectDelayLoad
New string value SysTray, key value data is {35CEC8A3-2BE6- 11D2-8773-92E220524153}
OK, after restarting the power, the volume icon appears and the icon of the connection icon also appears.