Microsoft released a critical update for Windows 11 on 2026-01-25 to fix app unresponsiveness and Outlook crashes caused by cloud-stored files.
App Performance Solutions
The latest out-of-band update resolves issues where applications became unresponsive when opening or saving files stored in cloud services like OneDrive. Users had reported difficulties with some programs failing, especially when files were located in cloud-backed locations.
Outlook and Cloud Services
The update also addresses Outlook's instability, particularly when handling PST files in cloud environments such as OneDrive. Previous versions had trouble managing these files, leading to crashes or failures to open the application.
Comprehensive Update Impact
This cumulative update follows an earlier emergency fix. That previous fix targeted problems that prevented Windows 11 devices from shutting down or hibernating and complications with remote login features. By installing this latest patch, users resolve multiple issues introduced by the January security update.
