If PES players want to play online at the moment, they have to deal with a bug. Lost conncection to server. CODE: VNBP733 displays the error message. However, not only PC users complain about the bug, even Playstation 4 players are not spared.
So far we have not received a message from Konami, but we hope that the developers are already working on this problem and there will be a hotfix shortly. But now a few tips on how you can fix the problem with PES 2019.
Start PES2019.exe as Admin
In the Steam forum, one of the most popular solutions seems to be to start PES2019.exe as an administrator. Simply start the registration by right-clicking, run as administrator.
Configure Windows Firewall
Windows Defender and Firewall are both designed to protect your computer from unauthorized access. However, it seems like some users need to disable them to run the game.
To configure the firewall, go to Settings under "Update and Security", then select the menu item Windows Security and open the Windows Defender Security Center there. Continue with the tab "Firewall and Network Protection", here you should both restore the standards for firewalls and then click on "Allow access from app through firewall". There you go to "Browse" and add PES 2019.