Current status as of May 18, 2021
Windows 10, version 20H2 is designated for broad deployment. The recommended servicing status is Semi-Annual Channel.
See also: Microsoft explains safeguard holds for Windows 10 Feature Updates
Known issues
This table offers a summary of current active issues and those issues that have been resolved in the last 30 days.
Summary Originating update Status Last updated A high-pitched noise might be heard when using 5.1 audio with certain settings
Certain combinations of apps, audio devices and Windows settings might produce a high-pitched noise when using 5.1 audioOS Build 19042.906
KB5000842
2021-03-29Mitigated 2021-05-18
10:21 PTAutomatic input of Furigana might not work as expected
In certain circumstances, the automatic Furigana input/conversion feature may not work as expected in apps.N/A Mitigated 2021-05-18
10:21 PTSecurity updates released May 11, 2021 might not offer in managed environments
Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager and managed devices are affected.OS Build 19042.985
KB5003173
2021-05-11Resolved 2021-05-11
19:01 PTErrors or issues during or after updating devices with certain Conexant audio drivers
Devices with affected Conexant or Synaptics audio drivers might receive a stop error with a blue screen.N/A Resolved 2021-05-07
13:29 PTErrors or issues during or after updating devices with Conexant ISST audio drivers
Devices with affected Conexant ISST audio drivers might receive an error or have issues with Windows 10, version 2004.N/A Resolved 2021-05-07
13:29 PTLower than expected performance in games
Some users have reported lower game performance in full screen or borderless windowed mode when using multiple monitors.OS Build 19042.906
KB5000842
2021-03-29Resolved 2021-04-27
15:48 PT
Resolved issues
Summary Originating update Status Date resolved Security updates released May 11, 2021 might not offer in managed environments
Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager and managed devices are affected.OS Build 19042.985
KB5003173
2021-05-11Resolved 2021-05-11
19:01 PTErrors or issues during or after updating devices with certain Conexant audio drivers
Devices with affected Conexant or Synaptics audio drivers might receive a stop error with a blue screen.N/A Resolved 2021-05-07
13:29 PTErrors or issues during or after updating devices with Conexant ISST audio drivers
Devices with affected Conexant ISST audio drivers might receive an error or have issues with Windows 10, version 2004.N/A Resolved 2021-05-07
13:29 PTLower than expected performance in games
Some users have reported lower game performance in full screen or borderless windowed mode when using multiple monitors.OS Build 19042.906
KB5000842
2021-03-29Resolved 2021-04-27
15:48 PTMicrosoft Edge missing after using custom media/ISOs including March 29, 2021 updates
Microsoft Edge missing when installing Windows from custom media/ISOs using updates released March 25, 2021 or later.OS Build 19042.906
KB5000842
2021-03-29Resolved 2021-03-29
17:01 PTUnexpected results when printing from some apps or to some printers
Issues might include missing or solid color graphics, misalignment/formatting issues, or printing of blank pages/labels.OS Build 19042.867
KB5000802
2021-03-09Resolved
KB50016492021-03-18
19:00 PTError when attempting to print to certain printers
You might receive an APC_INDEX_MISMATCH error with a blue screen when attempting to print.OS Build 19042.867
KB5000802
2021-03-09Resolved
KB50015672021-03-15
14:00 PTMemory or disk space error when opening documents in Microsoft Office apps
You might receive an error when attempting to open files that trigger the Protected View feature.OS Build 19042.844
KB4601382
2021-02-24Resolved 2021-03-13
11:42 PTSome games might fail to open, or you might receive an error
You might have issues with some Direct3D games when using in-game overlay feature of Discord.OS Build 19042.1000
KB4598291
2021-02-02Resolved External 2021-02-08
19:16 PTYou might receive an error when accessing the sign-in options or users MMC snap-in
You might receive the error, "Your PC will automatically restart in one minute"N/A Resolved 2021-01-08
13:57 PTStop error when plugging in a Thunderbolt NVMe SSD
Devices using Thunderbolt SSDs may receive a stop error
"DRIVER_VERIFIER_DMA_VIOLATION (e6)" when plugging an SSD in.N/A Resolved
KB45868532020-11-30
14:00 PTCertificates may not be present after updating to a newer version of Windows 10
Devices in a managed environment using update management tools or ISO images might lose certificates when updating.N/A Resolved 2020-12-11
18:27 PTIssues when using Microsoft IME for Japanese or Chinese languages
Users of the Microsoft IME for Japanese or Chinese languages might have issues.N/A Resolved
KB45868532020-12-03
14:18 PTDomain controllers in your enterprise might encounter Kerberos authentication issues
Authentication and renewal issues for Kerberos ticket after installing updates released November 10, 2020.OS Build 19042.630
KB4586781
2020-11-10Resolved
KB45944402020-11-19
10:00 PT
Source:
Add another issue which is going to keep 20H2 off my PCs:
Task Manager - Startup tabs does not update after a power up after installing 20H2 on my PC. The same stale data will be present after every power on. It works fine before 20H2 and after I uninstalled the 20H2 Enablement KB.
This is an issue which @f14tomcat has apparently made aware to M$ weeks, if not months ago.
Great... the conexant audio issue is not fixed with this update either, so I'm stuck on 1909 for the forseeable on this machine.
I would call installing the update over & over a bug.
I had to uninstall it because WU would keep searching for the update and reinstall it over & over & over.
I then needed to run Shawns Reset_Reregister_Windows_Update_Components.bat to fix windows update after.
Seems like you would be better off to install the 20H2 version available rather than going though all of that. Make sure you backup all personal items and then do a fresh install. It is available here: How to get the Windows 10 October 2020 Update version 20H2
Here are two huge 20H2 issues.
1) It has completely eliminated ability to use Legacy Edge.
2) You cannot directly do a repair upgrade and keep anything. There is a workaround i.e. you have to remove the enablement update from old program and features menus. It is not shown in windows updates.
I too, would like to see some proof of this. As far as I understand it, the Enablement package is purely to "enable" things in v2004 only, that are already there, but un-activated. I used the enablement package this morning, and it was only about 80MB.
80MB sounds to me like, it just enabled things in v2004. The Oct 2020 monthly update was 300+MB by comparison.
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