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File-Extension-Restriction-Bypass-in-Microsoft-365-Copilot

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Microsoft 365 Copilot enforces file extension restrictions only at the time of upload. Once a file is uploaded, it can be modified to a disallowed type (e.g., .exe, .vps) while retaining its original UniqueId. Copilot continues to access and process the file without rechecking its extension or type.

Creat2025-08-18T06:00:14
Update2025-08-18T08:13:18
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