I solved it myself. Thanks guys.
This problem does not occur in Safe Boot + Network.
I checked the event viewer.
After updating, operaautoupdate.exe outputs error.
I checked operaautoupdate.log
Failed to resolve proxy auto config for https://autoupdate.geo.opera.com/ Err: 12180
Recently updated are Adobe, VirtualBox, WindowsUpdate.
So, I tried the following things.
Organize services and startups.
Then this problem was solved.
(I checked antivirus software at the beginning, but it seems not to be the cause of the problem.)