Microsoft is adding native support for RAR, 7-Zip, and GZ archives to an upcoming version of Windows 11 expected this week.

https://www.bleepingcomputer.com/news/security/windows-11-adding-native-support-for-7-zip-rar-and-gz-archives/

Windows 11 adding native support for 7-Zip, RAR, and GZ archives

Microsoft is adding native support for RAR, 7-Zip, and GZ archives to an upcoming version of Windows 11 expected this week.

BleepingComputer
Super. Now we can open the .rar malware that comes in via email without any additional software @BleepingComputer
@jerry @BleepingComputer what's next? a .rar TLD?
@jkbecker @jerry @BleepingComputer why not a TLD for every MIME type 😈