MSI installers are widely used on Windows and some of the affected apps include security programs (such as Kaspersky), so it will be a priority for Microsoft. There is currently no timeline on the fix being rolled out to the stable channel but, given the acceleration of the bug fix here, I would expect a relatively short wait. Microsoft has also released a full list of the improvements in Windows 11 22000.348.
“We fixed a known issue that might prevent apps, such as Kaspersky apps, from opening after you attempt to repair or update the apps using the Microsoft Installer (MSI),” states the Windows Insider Program Team. The company added the patch as an “additional fix” late into the new build.
Windows 11 Build 22000.348 has been sent to beta and release preview channels. This was an urgent fix and Microsoft has acted quickly. 11/22 Update: Microsoft has confirmed that it has released a new version of Windows 11 to combat the installer problem.