Microsoft Teams and Outlook Fail to Launch on ARM Windows Devices

Photo: BleepingComputer
Quick answer
Microsoft is fixing a critical error on ARM-based Windows 11 24H2 devices where Microsoft Teams and the new Outlook fail to launch after August 2026 security updates.
Microsoft has confirmed a critical bug causing Microsoft Teams and the new Outlook for Windows to fail launching or crash on ARM-based devices. The issue arises after installing August 2026 security updates on Windows 11 version 24H2 or later.
The failure manifests as application crashes or inability to launch. Newly set up or recently reinstalled PCs are most vulnerable, particularly where Microsoft Store components had not been updated. The classic Outlook, Word, Excel, and other Office suite applications remain unaffected by this error.
As a temporary workaround, Microsoft recommends updating the Auto Super Resolution package to version 1.0.19.0 or later. Users should open Microsoft Store, navigate to the 'Downloads' section, and check for available updates. A permanent fix will be included in a future Windows update, though no specific release date has been confirmed.
This issue is the latest in a series of disruptions caused by August updates, following prior fixes for printing and PDF export issues in .NET Framework, as well as system crashes on devices with RGB peripheral lighting.
Common questions
- Which devices are affected by the Teams and Outlook launch issue?
- The problem impacts ARM-based devices running Windows 11 24H2 or later, including Surface Pro 11 and Surface Laptop 7. The classic Outlook and other Office applications are not affected.
- How can I temporarily fix the Teams and Outlook launch error?
- Update the Auto Super Resolution package to version 1.0.19.0 or later via Microsoft Store. Open the 'Downloads' section and check for available updates.
- When will Microsoft release a permanent fix?
- Microsoft is working on a permanent solution to be included in a future Windows update, though no specific timeline has been announced yet.
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