June Windows updates break Microsoft 365 sign-ins on Arm devices

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June Windows updates break Microsoft 365 sign-ins on Arm devices Microsoft is investigating a new known issue causing Azure Active Directory and Microsoft 365 sign-in issues on Arm devices after deploying the June 2022 Windows updates.

The company says in a service alert that users might experience “issues signing into some Microsoft 365 services” on a Windows Arm-based device after installing updates released as part of this month’s Patch Tuesday.

“Apps and services which use Azure Active Directory to sign in, might also be affected,” Microsoft further explains on the Windows release health dashboard.

According to Redmond’s service alert impacted scenarios include, but aren’t limited to, the following:

  • VPN connections for apps and services that use Azure Active Directory (Azure AD).
  • Desktop version of Microsoft Teams
  • Outlook Desktop Client for OneDrive for Business

Only the following client platforms are included in the comprehensive list of Windows versions affected by this newly acknowledged known issue: Windows 11 version 20H2, Windows 10 version 20H2, Windows 10 version 20H1, and Windows 10 version 20H2.

Redmond developers are currently working on a fix for the AAD and Microsoft 365 login issues, which will be included in a future Windows update.

“In the newest Windows security update, we’re aggressively investigating service logs and telemetry to discover the root cause and build a mitigation plan,” Microsoft writes.

Switch to online apps as a workaround.

Customers who are having sign-in troubles can use a workaround until the issue is resolved, according to the business.

Users who want to keep using the vulnerable products should switch to the web versions of the apps, according to Microsoft.

“You can utilize the web versions of the impacted programs, such as OneDrive, Microsoft Teams, and Outlook.com, to alleviate the issue,” Microsoft advises.

Users may experience connectivity issues when using Wi-Fi hotspots on up-to-date client and server systems, according to Redmond. This month’s Windows updates are plagued by more issues, with Redmond revealing today that users may experience connectivity issues when using Wi-Fi hotspots on up-to-date client and server systems.

Due to security enforcement designed to address a privilege escalation security problem, June’s upgrades may create backup issues on Windows Server systems, with programs failing to backup data using Volume Shadow Copy Service (VSS) (CVE-2022-30154).

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