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Released August 26, 2025 Update August 29, 2025 to include Windows 11, version 24H2
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
ASP.NET
Addressed an issue in ASP.NET where some error events fail to log properly in the Windows Event log. (Applies to: .NET Framework 4.8, 4.8.1)
WPF
Addressed an update for GB18030 certificate for Chinese language changes. (Applies to: .NET Framework 4.8, 4.8.1)
Known issues in this release
This release contains no known issues.
Summary tables
The following table outlines the updates in this release.
| Product version | Cumulative update preview |
|---|---|
| Windows 11, version 24H2 | |
| .NET Framework 3.5, 4.8.1 | 5064401 |
| Windows 11, version 23H2 | |
| .NET Framework 3.5, 4.8.1 | 5064403 |
| Windows 10, version 22H2 | 5064794 |
| .NET Framework 3.5, 4.8 | 5064399 |
| .NET Framework 3.5, 4.8.1 | 5064400 |
The operating system row lists a KB that's used for update offering purposes. When the operating system KB is offered, the applicability logic determines the specific .NET Framework update(s) installed. Updates for individual .NET Framework versions are 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 updates installed are the .NET Framework-specific version updates listed in the previous table.
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