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CONTAP-649468: ONTAP silently drops encrypted SMB2 CANCEL for pending CHANGE_NOTIFY without encryption enforcement, causing client hang(~60s)

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ontap-9
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nas
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Issue

ONTAP is rejecting encrypted SMB cancel requests when the session and share are not configured for encryption. This results in ONTAP silently dropping the cancel request and not returning a STATUS_CANCELLED response for pending change notify operations. 

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