Hello there,
Are you using any GPO or intune to deploy the bitlocker?
Recent change in BIOS settings or outdated TPM or Windows might also be the issue.
Windows has the auto-lock option set up by default. Turn this off and see if that helps.
Step 1. Press the Windows key on your keyboard and open "Control Panel" by searching for it.
Step 2. Now select "Device Encryption" under "Control Panel" to open "Bitlocker" settings.
Step 3. Now, click on the "turn off auto-unlock" option.
Step 4. Restart your computer for the changes to take effect.
Hope this resolves your Query !!
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