Windows 10 does disable some third-party security software, Microsoft has admitted, but because of compatibility – not competitive – issues.Redmond is currently being sued by security house Kaspersky Lab in the EU, Germany and Russia over alleged anti-competitive behavior because it bundles the Windows Defender security suite into its latest operating system. Kaspersky (and others) claim Microsoft is up to its Internet Explorer shenanigans again, but that’s not so, said the operating system giant.“Microsoft’s application compatibility teams found that roughly 95 per cent of Windows 10 PCs had an antivirus application installed that was already compatible with Windows 10 Creators Update,” said Rob Lefferts, director of security in the Windows and Devices group.“For the small number of applications that still needed updating, we built a feature just for AV apps that would prompt the customer to install a new version of their AV app right after the update completed. To do this, we first temporarily disabled some parts of the AV software when the update began.”Lefferts claimed that Windows Defender is fine with other security software on a PC, but if that third-party code expires or becomes outdated then Redmond’s security software will kick in. He said Defender wouldn’t scan a system without the permission of the operator.He also said that Microsoft works actively with third-party security firms to ensure compatibility, but is short on specifics. One of the key planks of Kaspersky’s case against Microsoft is that it cut compatability testing times from two months to six days.
Cutting compatibility testing to six days is unrealistic. It will be interesting how all this plays out in Europe.