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April 2025 security and quality rollup

Released April 8, 2025

Summary of what's new in this release

Security improvements

There are no new security improvements in this release. This update is cumulative and contains all previously released security improvements.

Quality and reliability improvements

This release contains the following quality and reliability improvements.

CLR

Addresses an issue where System.IO APIs are used to operate on files and directories on UNC shares. (Applies to: .NET Framework 4.8, 4.8.1.)

WPF

Addresses an issue with printing large number of pages due to an OutOfMemory exception. (Applies to: .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1.)

Known issues

This release contains no known issues.

Summary tables

Product version Cumulative update
Windows 11, version 24H2
.NET Framework 3.5, 4.8.1 5054979
Microsoft server operating system, version 24H2
.NET Framework 3.5, 4.8.1 5054979
Microsoft server operating system, version 23H2
.NET Framework 3.5, 4.8.1 5054705
Windows 11, version 22H2 and Windows 11, version 23H2
.NET Framework 3.5, 4.8.1 5054980
Microsoft server operating system, version 22H2 5055688
.NET Framework 3.5, 4.8 5055169
.NET Framework 3.5, 4.8.1 5054693
Microsoft server operating system, version 21H2 5055688
.NET Framework 3.5, 4.8 5055169
.NET Framework 3.5, 4.8.1 5054693
Windows 10, version 22H2 5055683
.NET Framework 3.5, 4.8 5054977
.NET Framework 3.5, 4.8.1 5054978
Windows 10, version 21H2 5055683
.NET Framework 3.5, 4.8 5054977
.NET Framework 3.5, 4.8.1 5054978
Windows 10 1809 and Windows Server 2019 5055681
.NET Framework 3.5, 4.7.2 5054695
.NET Framework 3.5, 4.8 5055175
Windows 10 1607 and Windows Server 2016
.NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2 5055521
.NET Framework 4.8 5055170

The following table is for earlier Windows and Windows Server versions for Security and Quality Rollup updates.  

Product version Security and quality rollup
Windows Server 2012 R2 5055686
.NET Framework 3.5 5044012
.NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 5054698
.NET Framework 4.8 5055173
Windows Server 2012 5055685
.NET Framework 3.5 5044009
.NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 5054697
.NET Framework 4.8 5055172
Windows Server 2008 R2 5055684
.NET Framework 3.5.1 5044011
.NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 5054696
.NET Framework 4.8 5055171
Windows Server 2008 5055687
.NET Framework 2.0, 3.0 5044010
.NET Framework 3.5 SP1 5040673
.NET Framework 4.6.2 5054696

The operating system row lists a KB which will be used for update offering purposes. When the operating system KB is offered, the applicability logic will determine the specific .NET Framework update(s) will be installed. Updates for individual .NET Framework versions will be installed based on the version of .NET Framework that is already present on the device. Because of this the operating system KB is not expected to be listed as installed updates on the device. The expected update to be installed are the .NET Framework specific version updates listed in the table above.