BitLocker TPM Group Policy difference between Allow and Require

[3lectr0]

Hello,


could somebody please explain the differences between "Allow" and "Require" for EACH of these BitLocker Group Policy options:

1. Configure TPM startup: "Allow TPM" vs "Require TPM"
2. Configure TPM startup PIN: "Allow startup PIN with TPM" vs "Require startup PIN with TPM"
3. Configure TPM startup key: "Allow startup key with TPM" vs "Require startup key with TPM"
4. Configure TPM startup key and PIN: "Allow startup key and PIN with TPM" vs "Require startup key and PIN with TPM"

Help is very appreciated!

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