Bypass Desktop App Rendering Issues Using Browser Access
Use the web interface when the desktop app fails to download files.
If the Copilot desktop app provides broken 'sandbox' links, switch to the browser version at copilot.microsoft.com to access and download your generated files.
The Scenario
You are using the Microsoft 365 Copilot app on Windows 11 and notice that the file links generated are 'sandbox' links that won't open or download. You need to access your work immediately without waiting for technical support.
Before & after
You might spend hours troubleshooting local app settings, clearing caches, or restarting your PC to fix a broken link. This manual troubleshooting can cost you 1–2 hours of productivity.
Open Copilot in a browser (copilot.microsoft.com) to bypass local app rendering issues. You can typically resume your work and access links in under 2 minutes.
The Prompt
I am unable to download the files we just created in the app. Can you provide the web-accessible download links for [FILENAME]?
If the Windows 11 app displays 'sandbox:' links that won't open, the web interface often serves as a reliable fallback for file retrieval.
Source
Microsoft 365 Copilot | Microsoft Community Hub"Try opening in a browser Go to copilot.microsoft.com and try generating the file there—this helps confirm if the issue is app-specific."