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You try to create an AMI but get an error: "InvalidInstanceID.NotFound". What is the most likely cause?

medium📝 Debug Q6 of 15
AWS - EC2 Fundamentals
You try to create an AMI but get an error: "InvalidInstanceID.NotFound". What is the most likely cause?
AYou lack permission to create AMIs
BThe AMI name is already taken
CThe instance is already stopped
DThe instance ID does not exist or is incorrect
Step-by-Step Solution
Solution:

  1. Step 1: Analyze error message

    "InvalidInstanceID.NotFound" means the instance ID provided is not found in the account or region.

  2. Step 2: Exclude other causes

    Permission errors or AMI name conflicts produce different error messages; instance state does not cause this error.

  3. Final Answer:

    The instance ID does not exist or is incorrect -> Option D

  4. Quick Check:

    InvalidInstanceID.NotFound = wrong instance ID [OK]
Quick Trick: Check instance ID spelling if NotFound error occurs [OK]
Common Mistakes:
  • Assuming permission issue
  • Blaming AMI name conflict
  • Thinking instance state causes error

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