Yesterday, we released the July 2021 Security and Quality Rollup Updates for .NET Framework.
Security
The June Security and Quality Rollup Update does not contain any new security fixes. See February 2021 Security and Quality Rollup for the latest security updates.
Quality and Reliability
This release contains the following quality and reliability improvements.
ClickOnce
- Addresses a regression introduced in previous updates. We now honor WinTrust policy setting “Ignore timestamp revocation checks” setting when validating timestamps in ClickOnce manifests.
CLR1
- When the process is not under high memory pressure it tends to favor doing BGCs over doing full compacting GCs. This is usually desirable but if the app behavior changes dramatically, it could cause much of the fragmentation in older generations (ie, gen2 and LOH) to be unused. You can collect GC ETW events which tell you how much fragmentation there is in gen2 and LOH and verify if you are in this situation.
Windows Forms
- Addresses an issue in Property Grid control to prevent incorrect data read in some scenarios in 64 bit processes.
- Addresses an issue where System.Drawing double frees allocated memory when failing to get printer settings.
WPF2
- Addresses an issue affecting a DataGrid contained in an outer ScrollViewer.
- Addresses a crash due to ElementNotAvailableException in a ListView with custom data-item automation peers.
1 Common Language Runtime (CLR) 2 Windows Presentation Foundation (WPF)
Getting the Update
The Security and Quality Rollup is available via Windows Update, Windows Server Update Services, and Microsoft Update Catalog.
Microsoft Update Catalog
You can get the update via the Microsoft Update Catalog. For Windows 10, NET Framework 4.8 updates are available via Windows Update, Windows Server Update Services, Microsoft Update Catalog. Updates for other versions of .NET Framework are part of the Windows 10 Monthly Cumulative Update.
**Note**: Customers that rely on Windows Update and Windows Server Update Services will automatically receive the .NET Framework version-specific updates. Advanced system administrators can also take use of the below direct Microsoft Update Catalog download links to .NET Framework-specific updates. Before applying these updates, please ensure that you carefully review the .NET Framework version applicability, to ensure that you only install updates on systems where they apply.
The following table is for Windows 10 and Windows Server 2016+ versions.
| Product Version | Cumulative Update | |
|---|---|---|
| Windows 10 21H1 | ||
| .NET Framework 3.5, 4.8 | Catalog | 5003537 |
| Windows 10, version 20H2 and Windows Server, version 20H2 | ||
| .NET Framework 3.5, 4.8 | Catalog | 5003537 |
| Windows 10 2004 and Windows Server, version 2004 | ||
| .NET Framework 3.5, 4.8 | Catalog | 5003537 |
| Windows 10 1909 | ||
| .NET Framework 3.5, 4.8 | Catalog | 5003539 |
| Windows 10 1809 (October 2018 Update) and Windows Server 2019 | 5004228 | |
| .NET Framework 3.5, 4.7.2 | Catalog | 5003541 |
| .NET Framework 3.5, 4.8 | Catalog | 5003538 |
| Windows 10 1607 (Anniversary Update) and Windows Server 2016 | ||
| .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 5004238 |
| .NET Framework 4.8 | Catalog | 5004115 |
The following table is for earlier Windows and Windows Server versions.
| Product Version | Security and Quality Rollup | |
|---|---|---|
| Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2 | 5004231 | |
| .NET Framework 3.5 | Catalog | 4578953 |
| .NET Framework 4.5.2 | Catalog | 4578956 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 5004122 |
| .NET Framework 4.8 | Catalog | 5004118 |
| Windows Server 2012 | 5004230 | |
| .NET Framework 3.5 | Catalog | 4578950 |
| .NET Framework 4.5.2 | Catalog | 4578954 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 5004121 |
| .NET Framework 4.8 | Catalog | 5004117 |
| Windows 7 SP1 and Windows Server 2008 R2 SP1 | 5004229 | |
| .NET Framework 3.5.1 | Catalog | 4578952 |
| .NET Framework 4.5.2 | Catalog | 4578955 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog | 5004120 |
| .NET Framework 4.8 | Catalog | 5004116 |
| Windows Server 2008 | 5004232 | |
| .NET Framework 2.0, 3.0 | Catalog | 4578951 |
| .NET Framework 4.5.2 | Catalog | 4578955 |
| .NET Framework 4.6, 4.6.2 | Catalog | 5004120 |
Previous Monthly Rollups
The last few .NET Framework Monthly updates are listed below for your convenience:
It's August 2021, and we have legacy mission-critical LOB Winforms applications. We deploy these apps with Visual Studio publish wizard to a file share on an intranet server as "available online only". When I go to install a program published in that manner, the new Chromium version of Edge is treating the "setup.exe" as a normal download, intercepting it rather than executing it. Our networking team has enabled ClickOnce for Edge...
Hi Tim,
Thanks for reporting this issue, however, this release did not make any changes to Windows Forms or ClickOnce which may have caused the issues you describe. The .EXE installer behavior is common for any other file but not just ClickOnce. Files which are *.EXE are always downloaded first, only *.application is supposed to install directly - this is what we expect to execute directly instead of downloading. If .Application is not...