Articles in this category BitLocker Recovery Key/TPM or BIOS change Overview Hardware change triggers recovery requirement Possible Causes This issue commonly occurs under the Device Encryption category, specifically related to BitLocker Recovery Key. Step-by-Step Fi... BitLocker Recovery Key/Windows update corruption Overview Update changes security policy triggering BitLocker Possible Causes This issue commonly occurs under the Device Encryption category, specifically related to BitLocker Recovery Key. Step-by-S... Encryption/File encryption inaccessible Overview Files encrypted but user profile corrupted or migrated Possible Causes This issue commonly occurs under the Device Encryption category, specifically related to Encryption. Step-by-Step Fix Encryption/External drive encryption Overview Drive encrypted without recovery key Possible Causes This issue commonly occurs under the Device Encryption category, specifically related to Encryption. Step-by-Step Fix