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Newly introduced tightened security measures could affect some third-party NAS devices and USB drives plugged into certain routers.

It has been disabled on Windows 11 Pro edition.

A laptop on a desk with the Windows 11 background on its screen.

While SMB signing has been available in Windows for decades, its mandatory implementation is new.

Users experience access issues may see various error messages, ranging from standard security notifications to obscure system errors.

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