pem file is too open code example
Example 1: Load key ".pem": bad permissions
chmod 400 ~/.ssh/mykeyfile.pem
Example 2: pem key permissions too open
chmod 400 mykey.pem
Example 3: pem file is too open
:: # Set Variable:
Cmd /c Set Key="C:\Path\to\keyfile"
:: # Remove Inheritance:
Cmd /c Icacls %Key% /c /t /Inheritance:d
:: # Set Ownership to Owner:
Cmd /c Icacls %Key% /c /t /Grant %UserName%:F
:: # Remove All Users, except for Owner:
Cmd /c Icacls %Key% /c /t /Remove Administrator "Authenticated Users" BUILTIN\Administrators BUILTIN Everyone System Users
:: # Verify:
Cmd /c Icacls %Key%