KB5040442Broken

BitLocker recovery forced on boot

BitLockerBootDevice Encryption

What broke

The July security update decided that users needed a surprise BitLocker recovery quiz on boot. After installing, PCs — especially Intel systems with Modern Standby — would boot straight to the BitLocker recovery key prompt, locking users out of their own machines. Hope you saved that 48-digit recovery key somewhere! Most people hadn’t, because Windows enabled Device Encryption automatically without making it obvious. Microsoft acknowledged the issue affected “some” devices. It mostly affected the ones people were trying to use.

Sources

  1. Neowin: KB5040442 incident report
  2. tomshardware.com: KB5040442 incident report
  3. laptopmag.com: KB5040442 incident report
  4. BleepingComputer: KB5040442 incident report

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