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An Azure VM's outbound internet access stops working after an NSG rule change. The team checks effective rules and finds only the default allow-VnetInbound + default deny-AllInbound rules visible. What's the most likely cause?
AThe VM's IAM role expired
BA new outbound deny rule was added with a lower priority number (higher precedence) that blocks the traffic
CAzure DNS is offline globally
DThe VM has no IP address
Answer & Solution
Correct answer: B. A new outbound deny rule was added with a lower priority number (higher precedence) that blocks the traffic
NSG rules are evaluated by ascending priority; an added outbound deny with a low number can block before the default allow-VnetOutbound. Other options are implausible.
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