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https://github.com/MicrosoftDocs/windows-itpro-docs/issues/3012
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2019-04-17 10:40:41 +03:00
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windows/security/information-protection/tpm/switch-pcr-banks-on-tpm-2-0-devices.md
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@ -50,6 +50,22 @@ As a result, if the currently used PCR bank is switched all keys that have been
Before switching PCR banks you should suspend or disable BitLocker – or have your recovery key ready. For steps on how to switch PCR banks on your PC, you should contact your OEM or UEFI vendor.
## How can I identify which PCR bank is being used?
You can identify which PCR bank is currently used by Windows by looking at the registry.
Registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\IntegrityServices
DWORD: TPMActivePCRBanks
Defines which PCR banks are currently active.
Registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\IntegrityServices
DWORD: TPMDigestAlgID
Algorithm ID of the PCR bank that Windows is currently using.
## Related topics
- [Trusted Platform Module](trusted-platform-module-top-node.md) (list of topics)