QuickTime 7.4.5 for Windows
This release is recommended for all QuickTime 7 users.
QuickTime 7.4.5 includes fixes that enhance reliability, improve compatibility with third-party applications, and address security issues.
QuickTime 7.4.5 for Windows SHA-1 Digest:
SHA1 (QuickTimeInstaller.exe) = 4e507f48610f9a65be18b2c37ceead18da2d4c03
For explanation of what a SHA1 digest is, please visit this website: Mac OS X: How to verify a SHA-1 digest.
For detailed information on the security content of this update, please visit this website: Apple security updates.