Microsoft: April updates trigger BitLocker key prompts on some servers

Microsoft has confirmed that some Windows Server devices may prompt for BitLocker recovery keys following the April updates. This issue appears to be linked to changes in how the updates interact with Secure Boot and system integrity checks, causing BitLocker to detect a potential change in the environment and trigger recovery mode. As a result, administrators may need to manually enter recovery keys to regain access. Microsoft is investigating the behaviour and has provided guidance for affected users, recommending they ensure recovery keys are backed up and available before applying updates.