Windows 11 KB5048667 is turning out to be a disaster for some people, and we can confirm that there’s an issue where the update could fail to install. It’s also making some PCs run slower than usual,

According to Microsoft, users who have updated to Windows 11 24H2 may run into issues when opening Outlook if they have Google Workspace Sync installed on their system. Google Workspace Sync for Microsoft Outlook makes it easier to manage and organize Google Workspace emails,

Microsoft is blocking upgrades to Windows 11 version 24H2 on PCs where old versions of the Google Workspace Sync plugin for Outlook are installed.

Meanwhile, new Outlook rollout looms for 365 Enterprise users Microsoft has admitted that an issue in Windows 11 24H2 could stop Outlook from starting. It has also been confirmed that Microsoft 365 Enterprise users will switch to the new Outlook in April 2026.