Clearing TPM Does Not Ask For New Password, But "change Owner Password" Asks For The Old One
Answer : I had the same problem. This is what I found after a lot of searching: Later versions of Windows 10 do not allow you to set, save or change the TPM owner password by default. The password is generated by windows, used by windows to configure the TPM then discarded. That way nobody can tamper with the TPM after it has been activated. In effect, the owner password no longer exists. You can disable this security feature by changing a registry value, clearing the TPM and rebooting. After that, you will be able to set and change the TPM owner password. See this article: https://technet.microsoft.com/en-us/itpro/windows/keep-secure/change-the-tpm-owner-password?f=255&MSPPError=-2147217396 After reading the article, I decided to leave things as they are, with the new Windows default (i.e. no way to access or change TPM owner password). You only need the TPM owner password if the PC security is being centrally managed in an enterprise setup with the need for a security admin...