In an official support document recently updated, Microsoft announced that it will no longer support disabling Microsoft Defender by modifying the registry. Microsoft has been tight-lipped about the change, but now the company has provided more information about the whole thing.
Microsoft explains that DisableAntiSpyware was set up in the Windows registry to allow IT professionals and administrators to disable the antivirus engine at any time when they want to install third-party security products in Windows 10.
However, the software giant says it’s a legacy of traditional options that don’t make any sense today because Windows Defender automatically shuts down every time a user installs another antivirus product on their device.
This setting does not apply to consumer devices, so we decided to remove this key. This adjustment covers microsoft Defender AntiMalware platform version 4.18.2007.8 and KB4052623 later. Enterprise E3 and E5 releases will be released in the future.
Note that this setting is protected by tampering. Tamper protection is available in all home and professional versions of Windows 10, version 1903, and later, and is enabled by default. The impact of DisableAntiSpyware removal is limited to Windows 10 prior to 1903 using Microsoft Defender Antivirus. This change does not affect the connection of third-party antivirus software to Windows Security apps. These will continue to work as expected.