Microsoft is currently addressing a significant issue affecting users of Microsoft Teams and the new Outlook on ARM-based Windows devices, specifically the Surface Laptop 7 and Surface Pro 11. This problem arose following updates released since the August 2026 Patch Tuesday, leading to crashes and launch failures for those who have yet to install the necessary Microsoft Store updates.
Details of the Issue
According to a recent Windows release health update from Microsoft, users may experience difficulties when attempting to launch Microsoft Teams or the new Outlook for Windows after installing security updates from August 11, 2026, specifically update KB5121003. Notably, classic Outlook, Word, Excel, and other applications remain unaffected by this issue.
The complications are primarily observed on newly set up or freshly imaged PCs that lack the latest Microsoft Store updates. Microsoft has not disclosed the underlying cause of these disruptions but has recommended a temporary solution for affected users.
Temporary Workaround
To mitigate the impact of these issues, Microsoft suggests updating the Auto Super Resolution Package. This package is designed to enhance gameplay on Copilot+ PCs by utilizing AI to improve performance and detail in supported games. Users can follow these steps to update:
- Open the Microsoft Store.
- Navigate to Downloads.
- Select Check for updates.
- Install Auto Super Resolution Package version 1.0.19.0 or later.
Future Fixes and Ongoing Issues
Microsoft is actively working on a permanent resolution for this issue, which is expected to be included in a forthcoming Windows update. This situation is part of a broader pattern of known issues stemming from the August updates. Recently, Microsoft acknowledged that the August 2026 .NET Framework updates have been causing problems with printing and PDF exports in certain applications.
Additionally, the company has been rolling out fixes for other known issues, such as system crashes and gaming problems linked to peripherals featuring built-in RGB lighting, which resulted in “EXCEPTIONACCESSVIOLATION” errors on Windows 11 devices. Furthermore, Microsoft has advised customers to disregard alerts indicating that Microsoft Defender Antivirus has been disabled following the latest Defender updates.
