Hi @Julie M ,
Thanks for posting in Microsoft Q&A forum.
I checked in my environment and found that there is the same situation as you.
Then I checked how these machines are different and found that the hard disk of the devices that only have Bitlocker Policy tab did not meet the system requirements for Bitlocker, so even if Bitlocker Policy was deployed, it could only receive but not enable Bitlocker.
So it is recommended to check whether the devices that only display bitlocker policy meet all the requirements for BitLocker.
For the specific requirements, please use the following articles as references:
https://learn.microsoft.com/en-us/windows/security/information-protection/bitlocker/bitlocker-overview#system-requirements
https://learn.microsoft.com/en-us/windows/security/information-protection/bitlocker/bitlocker-overview-and-requirements-faq
Below are the screenshot for reference:
The devices with Bitlocker tab:
The device only have Bitlocker Policy tab:
Hope the above information can help you.
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