All my computers are trying to connect to 54.38.216.83 and AVG is stopping them due to "Blacklist". Is this something to do with Boinc? I've added new projects recently. All but 2 computers do nothing but Boinc.

The ip doesn't produce a webpage or even respond to a ping.

It's not on any blacklist. https://dnschecker.org/ip-blacklist-checker.php?query=54.38.216.83

It's nothing to do with BOINC.

You need to do a full system scan on all your systems for malware/hijackers.
I keep getting warnings. "IP address blocked."

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Grant
Darwin NT.

But AVG finds no problems on the computers. Also it blocks the IP address as "blacklisted", yet it isn't on any blacklist (I looked the address up in a blacklist checker). I asked AVG in their forum but got no response in 2 days, just 14 views. I use AVG free and am not going to pay for support.

https://community.avg.com/t/avg-blacklists-an-ip-yet-its-not-on-any-blacklist/315054

It's not causing a real problem, just filling my AVG notifications so I can't see other things.

Stupid AVG didn't put anything in the log about which program was using the IP. Or maybe windows won't tell it? It appears with windows you can only see CURRENT connections, so I'd have to catch it in the act.

It's of course depends on the version of the OS you are using, but from my experience I can say, if you don't use 'premium' features of any antivirus, then you don't need them, since the default Windows Defender (at least on Windows 11) is good enough.

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BOINC maintainer.
For any insight, check my BOINC Development Blog.

Yes, AVG is annoying, but at least I can easily see what it's doing and usually tell it not to (if it's a file I trust, the "report false positive" and "add exception" is right there in the dialog box).

But with Windows Defender, it's very difficult to override things and put in exceptions. And it doesn't even tell you it's blocked a file, files just disappear off your computer, or programs stop working, and you don't know why.

I've just had to reinstall windows from scratch twice due to 4 horrific bugs (*see below) and there are so many things I have to adjust to make the interface usable, half of them involving 3rd party utilities.

*A few years ago I upgraded from windows 10 to windows 11 and it for some reason added a boot menu to still go back to windows 10. I ignored it since it went away after the first boot. Fast forward to recently. I realised I was stuck on 21H2 instead of 24H2, because updates won't allow it without a TPM (who has that?!), and it didn't even tell me, I just kept getting the update icon saying I must download security updates, which when clicked, searched for them and found none! So I used a workaround to get past this silly rule and it refused to boot with that illogical message it can't find the boot drive, yet the message was just read from the boot drive! Inserting a windows DVD/USB stick has no option to install over itself, just a repair function which never works. So I had to reinstall from scratch. This put all my documents and settings into a c:\windows.old folder. I then got this stupid boot menu for windows 10 again, so I told it to take it off the menu. This actually deleted the windows.old it had just created! I retrieved it from a backup onto C:, then realised it was huge and filling my NVME, so I decided to move it to my hard disk. I copied it, then windows refused to delete the one on C:. So I used a trick with robocopy to remove the folder. Somehow this linked from files in there to the live files in c:\windows (what?!?!) and deleted a lot of system files. The computer went nuts so I rebooted and windows then couldn't use the internet, load half the programs or open half the system stuff and menus. I reinstalled again!

MS needs to make a repair which actually works, allow installing windows on top of itself so all the files are left there, stop deleting things I didn't ask it to, and stop trying to shut out any computer which isn't brand new! This is a Ryzen 9 3900XT 24 thread CPU with a high spec gaming motherboard for crying out loud!