Windows 10: Is additional anti-virus software recommended with Windows Defender?

Is additional anti-virus software recommended with Windows Defender? I'm thinking I may be better off turning off my #1 ranked anti-virus program which I think stinks, and only tries to sell me expensive upgrades and just use Defender. My anti-virus program didn't block a catastrophic breach, and it may be blocking Defender. If Defender is sufficient, I trust Microsoft before others.

:)

 

Anti-Virus software

Both trend micro and system mechanic are conflicting with Windows Defender. Any resolution or recommendation for an anti-virus software?

 

Windows Defender realtime scanning will not switch on - it detects another anti-virus product.

Windows Defender realtime scanning will not switch on, and the message suggests there is another anti-virus product present but if there is it does show up in Window 10 UI.

The long story is that I am troubleshooting a problem with application software. The manufacturer suggest removing Bitdefender because there product is incompatible. I thought I would give this a try, if only to element Bitdefender as a cause.

Firstly, I upgraded from Bitdefender 2016 to 2017 to see if that made a difference. The application still failed so I decided to try removal.

• I used the standard uninstall to remove Bitdefender 2017, rebooted but Windows Defender would not start realtime protection because another product was providing realtime protection
• I download the uninstall application for Bitdefender 2017, ran it then rebooted but Windows Defender would not start realtime protection because another product was providing realtime protection
• I checked the file system and all Bitdefender files have been deleted.
• I check the registry and found a couple of references to Bitdefender Wallet, then deleted these.
• I rebooted but Windows Defender would not start realtime protection because another product was providing realtime protection
• I reran the uninstall application for Bitdefender 2017 then rebooted but Windows Defender would not start realtime protection because another product was providing realtime protection.
  

I can find no traces of Bitdefender so I wonder why Windows Defender detects another anti-virus software. I've check other posts but couldn't find additional steps for uninstalling an anti-virus software. Any suggestions?

Moved from Windows 10

 

How to scan anti-virus with windows Defender?

For windows 10, I would like to know on how to scan anti-virus with windows Defender, when I select a file and right click, there is no anti-virus for scanning for windows defender and how to make windows defender update automatically?

Does anyone have any suggestions?

Thanks in advance for any suggestions