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The September 3, 2020 update for Windows 10 Version 2004 includes cumulative reliability improvements in .NET Framework 3.5 and 4.8. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections.
| CLR1 |
- Addresses an issue in some 32 bit apps where, in certain scenarios, the JIT might omit a function call - Improved support for cleaning up private temporary certificate keys |
| WPF2 |
- Addresses an issue with a null-reference crash in automation code, arising from re-entrancy when reconnection to a remote desktop. |
1 Common Language Runtime (CLR)
2 Windows Presentation Foundation (WPF)
Install this update
| Release Channel | Available | Next Step |
| Windows Update and Microsoft Update | Yes | To download and install this update, go to Settings > Update & Security > Windows Update, and then select Check for updates. |
| Microsoft Update Catalog | Yes | To get the standalone package for this update, go to the Microsoft Update Catalog website. |
| Windows Server Update Services (WSUS) | No | You can import this update into WSUS manually. See the Microsoft Update Catalog for instructions. |
File information
For a list of the files that are provided in this update, download the file information for cumulative update .
To apply this update, you must have .NET Framework 3.5 or 4.8 installed.
You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.
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