Last week, Microsoft released Azure AD Connect version 1.1.751.0. This release of Microsoft’s free Hybrid Identity bridge product to synchronize objects and their attributes from on-premises Active Directory Domain Services (AD DS) environments to Azure Active Directory is a HotFix release.
This means it is not offered to organization running Azure AD Connect using the Automatic Upgrade functionality. Instead, it is available for download, only.
Azure AD Sync
An issue was corrected where automatic Azure instance discovery for China tenants was occasionally failing.
AD FS Management
There was a problem in the configuration retry logic that would result in an ArgumentException stating:
an item with the same key has already been added.
This would cause all retry operations to fail.
This is version 1.1.751.0 of Azure AD Connect.
It was signed off on on April 12, 2018.
At first sight, making a version of Azure AD Connect available for download only would not make much sense. However, the two fixes apply to the initial configuration part of Azure AD Connect and, thus, do not affect organizations currently running Azure AD Connect without problems (after configuration).
Surely, these fixes flow into next versions of Azure AD Connect that will be made available for automatic upgrades. There’s no hurry, though.