Hi,
Thank you for reaching out and providing detailed context. We understand the challenge you're facing with several Windows 11 devices where built-in apps such as Photos, Paint, Notepad, Calculator, and Snipping Tool are no longer functioning, especially within a closed network environment.
While most default apps are distributed and updated via the Microsoft Store, there are supported methods to reinstall them offline using the Windows Package Manager (winget) or by downloading app bundles manually. For example, apps like Paint and Snipping Tool can be reinstalled using offline installers provided by Microsoft. Additionally, this Windows 11 Forum guide outlines how to use winget install commands to reinstall core apps without accessing the Store directly.
Please note that winget requires the App Installer to be present on the system. If it's not available, you may need to sideload the App Installer package first. For environments with strict network controls, we recommend setting up an internal package repository or using deployment tools like Microsoft Endpoint Configuration Manager to distribute app packages securely.
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Best regards,
Quinnie Quoc.