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You tried to launch an EC2 instance using a launch template but got an error: "Invalid launch template version specified." What is the most likely cause?

medium📝 Debug Q14 of 15
AWS - Auto Scaling
You tried to launch an EC2 instance using a launch template but got an error: "Invalid launch template version specified." What is the most likely cause?
AThe launch template ID is incorrect
BThe instance type is not supported in the region
CThe AMI in the launch template is deprecated
DThe specified version number does not exist in the launch template
Step-by-Step Solution
Solution:
  1. Step 1: Analyze error message

    The error says "Invalid launch template version specified," indicating a problem with the version number.
  2. Step 2: Identify cause

    This usually means the version number given does not exist or is mistyped.
  3. Final Answer:

    The specified version number does not exist in the launch template -> Option D
  4. Quick Check:

    Error about version = wrong version number [OK]
Quick Trick: Check version number exists in template [OK]
Common Mistakes:
MISTAKES
  • Assuming AMI or instance type causes version error
  • Not verifying launch template ID correctness
  • Ignoring error details about version

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