Some users reported that they are hassled by the annoying Overwatch 2 unexpected server error.
The first time it occurred can be dated back to the initial release days of the game.
People have figured out a bunch of fixes for this issue.

Why Does Overwatch 2 Unexpected Server Error Happen?
They may regard Overwatch as a harmful program and block it.
Sometimes, Internet can be the one to blame if you are on a bad Internet connection.
If the Internet is slow, you’re able to try todisconnect and reconnect your Internet.
Or you canrestart the Internet Modem and Routerto fix many minor Internet problems.
To avoid being blocked, you’re free to disable them temporarily.
If it is, you might change to another antivirus or just remove it when you are playing Overwatch.
If you are using the built-in antivirus, it’s possible for you to follow the next steps.
Step 1: ClickStartand go to theSettingsoption.
Step 2: InUpdate & Security, clickWindows Securityfrom the left panel.
Step 3: ClickVirus & threat protectionand selectManage settingsunder theVirus & threat protection settingssection.
Step 4: Turn theReal-time protectionoption off.
After you finish the Overwatch, youd better turn theReal-time protectionoption on.
Therefore, you’re able to check the server status through some official channels.
you could follow itsofficial Twitter accountand all-important notifications will be disclosed on it.
Method 4: kickstart your PC or Console
The classic kickstart your gear troubleshooting tip holds true.
you could always get a new start by restarting your devices and the error may disappear.
Hope this article can be helpful.
Thanks for your reading.