@burnout426 Thanks for replay. I'll check tomorrow if the process starts but lock on the opera.exe file happened only when I try to restart it. Close and then try to open again. Then this proces is locked somehow and opera is not showing as window only in the process manager.

@nvmjustagirl I see, didn't noticed VPN's build in Opera now. Mine is disabled and I didn't try it yet.
I think the problem with task manager could be related to some problems when I click opera after is closes then maybe crashes and lock process somehow then in task manager you're unable to close it but is strange you can not kill it.
So maybe Bitdefender is scanning or doing something on it and lock the file. It only happened on one of PC I use.

Hi @nvmjustagirl I don't use any of VPN. This service is disabled in my computer or I don't use it in Bitdefender.

Hi!
I have some troubles with Opera 65.0.3467.62 on Windows 7. After few (5-6h) Working with open few tabs 2x gmail 1x radio online plus other pages I have trouble websites not loading gmail showing there's connection lost. But I still have internet on Chrome. But not working on Opera.

I closes Opera window and then when I try to reopen again after few seconds can't see Opera is loaded. In task manager I can see process Opera but no vision on windows. If I try to kill this process from task manager it is impossible to do it.
Only restart computer helps.
I use:
LastPass: Free Password Manager
Opera Ad Blocker
Popup Blocker (strict)
It happens before I add LastPass extension. I'll try to disable/delete all and see if that helps. Anyone have another idea why?
I use Bitdefender Security as antywirus and firewall but there's no information about blocking anything.

Yes after update is the same for me...