KB4598299 Cumulative Update Preview .NET Framework 3.5 and 4.8 Win Update

Ghot · 02 Feb 2021

@Brink

Just popped up for me in WAU Manager.
Installed w/o issue.

JGToy · 02 Feb 2021

Not yet showing on any of my machines!

lirene · 02 Feb 2021

if you go to the ReportingEvents.log file in C:/Windows/SoftwareDistribution, you can see if the phrase "Download queued" popped up today. At least in my recent experience, the .NET updates immediately get queued. But if I manually download/install the file, the queued download is cancelled.

JGToy · 03 Feb 2021

Just checked two computers and this WU was there ready to reboot.

DrSysop · 04 Feb 2021

I got it installed automatically is this the same as a regular as it say preview or is this the full one? also i got
2021-01 Cumulative Update Preview for Windows 10 Version 20H2 for x64-based Systems (KB4598291) as optional or is there a newer one coming out?

What do they mean by Preview? use to not say this.

Brink · 04 Feb 2021

DrSysop said:

I got it installed automatically is this the same as a regular as it say preview or is this the full one? also i got
2021-01 Cumulative Update Preview for Windows 10 Version 20H2 for x64-based Systems (KB4598291) as optional or is there a newer one coming out?

What do they mean by Preview? use to not say this.

Hello,

The next non-preview update is due on February 9, 2021.

https://techcommunity.microsoft.com/...ce/ba-p/222376

KB4598291 CU Windows 10 v2004 build 19041.789 and v20H2 19042.789

Phone Man · 06 Feb 2021

I think the .NET preview is triggered by a "manual update check" and not by the "auto update check" like normal updates on Update Tuesday.

.NET information

KB4598299 Cumulative Update Preview .NET Framework 3.5 and 4.8-manual-update.png

Normal non-preview information.

KB4598299 Cumulative Update Preview .NET Framework 3.5 and 4.8-autp-u-dates.png

On my main system I got the .NET preview and uninstalled it and will see what I get on Tuesday.

Also the "optional preview" CU does not have security updates.
A new CU that comes out on Tuesday will have addition security updates and all fixes from the preview.

Jim

Bastet · 07 Feb 2021

Has anyone noticed their PC slowed down after installing the CU preview?
So far I’m having slow appearance of the log in screen, double-clicking to open a program doesn’t work first time & the opening programs is slow.
Currently restoring from an image to see if it improves.

ASP.NET	- Addresses an issue where after installing the update released on October 20th, some ASP.Net applications fail during precompilation – likely with a message that contains the words “Error ASPCONFIG.”
WPF₁	- Addresses a hang when scrolling to the end of a TreeView, when layout rounding is enabled and DPI scaling is not 100%.
CLR₂	- Improves the reliability of automatic Native Image generation task.

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. Note: This update is available on WSUS via 4598299.