The page you referenced from support.microsoft.com for "April 22, 2025—KB5055629 (OS Builds 22621.5262 and 22631.5262) Preview" currently displays a "Sorry, page not found" error.
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Revision Note: V1.0 (July 14, 2015):
Summary: Microsoft is announcing the availability of an update to harden scenarios in which Data Encryption Standard (DES) encryption keys are used with accounts. Microsoft disabled DES by default starting in Windows 7 and Windows Server 2008 R2. However...
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There have been at least two builds released after RC 7100 - i.e. builds 7137 and 7201. Are these builds available for download on Microsoft's web site? Also please confirm that MS is not making updates available thru the Windows Update facility built into Windows 7.