Just like every month, Microsoft released cumulative quality updates to its supported Operating Systems in June 2021. This month’s updates, however, show a particular focus on several fixes for Azure AD-joined and Hybrid Azure AD-joined Windows 10 devices running Windows 10 version 1809 and beyond.
Let’s take a look:
Windows 10 version 1809 has reached end of support. The May 11, 2021 update is the last update for Windows 10, version 1809.
Error 0x80070490 when Hybrid Azure AD Joining
This update addresses an issue with a race condition between Task Scheduler and the Workstation Service. As a result, users cannot automatically join a hybrid Azure Active Directory (AAD) domain and error 0x80070490 is generated.
DSRegCmd.exe stops working
This update addresses an issue with a partial Service Connection Point (SCP) configuration that causes dsregcmd.exe to stop working. This issue occurs because of a case-sensitive domain ID name comparison that occurs when joining a hybrid Azure Active Directory domain using single sign-on (SSO).
Accidental triggers of Hybrid Azure AD Join
This update addresses an issue that accidently triggers hybrid Azure AD joining even when the Group Policy Register domain-joined computers as devices is set to Disabled. For more information, see Post configuration tasks for Hybrid Azure AD join.
Work accounts disappearing from Office apps
This update addresses an issue that causes Azure Active Directory (AAD) Work Accounts to unexpectedly disappear from certain apps such Microsoft Teams or Microsoft Office.
When you are experiencing issues with Azure AD-joined and Hybrid Azure AD-joined Windows 10 devices, then give priority to the May 2021 cumulative quality update for the respective Windows 10 version(s) in your organization(s) over older updates.