Microsoft has released three non-critical updates for Windows Vista. The first is the most important, as it is a general update to improve reliability and stability, available in 32-bit and 64-bit versions. The other two updates are more specific, one being to extend the File Management APIs to enable discovery and recovery of deleted files from both non-encrypted and Bitlocker encrypted volumes, available in 32-bit and 64-bit; the other being an update designed to resolve latency issues with certificates where the SIA extension is installed, again in 32-bit and 64-bit versions.