I had / have this issue as well. It happened when I was on Win7 which I thought must have been because I needed to update to Win10.... I updated to Win10 but still was failing to connect to theserver.My PC did a bunch of updates (fun, especially since I have all updates turned off) and now it can't seem to connect to the UOA update server.
Any Windows wizards out there have suggestions to fix this? I've turned off firewalls and windows defender and it still didn't help.
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Unfortunately it still won't connect properly after various suggestions and all it keeps saying is port 80/443 error. No matter what I do to said port it just refuses to allow the connection.I had / have this issue as well. It happened when I was on Win7 which I thought must have been because I needed to update to Win10.... I updated to Win10 but still was failing to connect to theserver.
The good news is that you can still go to the tugsoft website and manually connect to the update server. This will at least allow you to use UOA if you've exhausted your 10 failed attempts and refresh them. I had some success doing that and was able to use UOA without an issue for a few days but when I made it a short cut it started randomly failing and throwing this message.... it still successfully connects though after a few attempts so I haven't dug too further into it but it might be where the short cut is pointing?