For Hybrid Identity admins still stuck with Azure AD Connect v1.x installations on Windows Server 2008, Windows Server 2008 R2, Windows Server 2012 and/or Windows Server 2012 R2, Microsoft released a new version of Azure AD Connect that addresses two issues.
Microsoft addressed an issue where the Autoupgrade process attempted to upgrade Azure AD Connect installations running on Windows Server 2008 and/or Windows Server 2008 R2 and failed. These versions of Windows Server are no longer supported.
Starting with this release Azure AD Connect only attempts to automatically upgrade on hosts that run Windows Server 2012, or newer version of Windows Server.
As I've explained before, the Automatic Upgrades feature only works in supported configurations in terms of Windows Server versions, .NET Framework versions, etc.
Synchronization Service Manager Crashes
Microsoft addressed an issue where, under certain conditions, the Synchronization Service Manager (miisserver.exe) crashes due to an access violation exception.
This is version 18.104.22.168 of Azure AD Connect.
This release in the 1.x branch for Azure AD Connect was made available for download and for Automatic Upgrades as a 104,5 MB weighing AzureADConnect.msi on October 18, 2021.