Windows 10, version 2004 and Windows Server, version 2004

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Current status as of February 3, 2021
Windows 10, version 2004 is designated for broad deployment. The recommended servicing status is Semi-Annual Channel.
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Known issues

This table offers a summary of current active issues and those issues that have been resolved in the last 30 days.

SummaryOriginating updateStatusLast updated
Errors 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
13:12 PT
Errors 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
13:12 PT
Lower 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 19041.906
KB5000842
2021-03-29
Resolved
2021-04-27
15:48 PT
Automatic 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
2020-12-10
18:24 PT

Issue details

April 2021

Lower than expected performance in games

StatusOriginating updateHistory
ResolvedOS Build 19041.906
KB5000842
2021-03-29
Resolved: 2021-04-27, 15:48 PT
Opened: 2021-04-23, 18:04 PT
A small subset of users have reported lower than expected performance in games after installing KB5000842 or later updates. Most users affected by this issue are running games full screen or borderless windowed modes and using two or more monitors.

Affected platforms:
  • Client: Windows 10, version 20H2; Windows 10, version 2004
  • Server: Windows Server, version 20H2; Windows Server, version 2004
Resolution: This issue is resolved using Known Issue Rollback (KIR). Please note that it might take up to 24 hours for the resolution to propagate automatically to consumer devices and non-managed business devices. Restarting your device might help the resolution apply to your device faster. For enterprise-managed devices that have installed an affected update and encountered this issue, it can be resolved by installing and configuring a special Group Policy. Note Devices need to be restarted after configuring the special Group Policy. For help, please see How to use Group Policy to deploy a Known Issue Rollback. For general information on using Group Policies, see Group Policy Overview.

December 2020

Automatic input of Furigana might not work as expected

StatusOriginating updateHistory
MitigatedN/A

Last updated: 2020-12-10, 18:24 PT
Opened: 2020-12-03, 12:29 PT
When using the Microsoft Japanese Input Method Editor (IME) to enter Kanji characters in an app that automatically allow the input of Furigana characters, you might not get the correct Furigana characters and might need to enter them manually. Note for developers: Affected apps are using the ImmGetCompositionString function.

Workaround: To mitigate this issue, please follow the instructions in Revert to a previous version of an IME (Input Method Editor).

Affected platforms:
  • Client: Windows 10, version 20H2; Windows 10, version 2004
  • Server: Windows Server, version 20H2; Windows Server, version 2004
Next steps: We are working on a resolution and will provide an update in an upcoming release.

May 2020

Errors or issues during or after updating devices with certain Conexant audio drivers

StatusOriginating updateHistory
ResolvedN/A

Resolved: 2021-05-07, 13:12 PT
Opened: 2020-05-27, 00:20 PT
Synaptics and Microsoft have found incompatibility issues with certain versions of drivers for Conexant or Synaptics audio devices and Windows 10, version 2004 (the Windows 10 May 2020 Update). Windows 10 devices with affected Conexant or Synaptics audio drivers might receive a stop error with a blue screen during or after updating to Windows 10, version 2004. The affected driver will be named Conexant HDAudio Driver under Sound, video and game controllers in Device Manager and have versions 8.65.47.53​, 8.65.56.51​, or 8.66.0.0 through 8.66.89.00 for chdrt64.sys or chdrt32.sys.

To safeguard your update experience, we have applied a compatibility hold on Windows 10 devices with affected Conexant or Synaptics audio drivers installed from being offered Windows 10, version 2004 or Windows Server, version 2004 until the driver has been updated. If your organization is using Update Compliance, the safeguard IDs are 25702617, 25702660, 25702662, and 25702673.

Affected platforms:
  • Client: Windows 10, version 20H2, Windows 10, version 2004
  • Server: Windows Server, version 20H2, Windows Server, version 2004
Resolution: The safeguard hold with safeguard IDs 25702617, 25702660, 25702662, and 25702673 has been removed for all devices as of May 7, 2021, including devices with affected drivers. If updated drivers are not available for your device and you are offered Windows 10, version 2004 or Windows 10, version 20H2, a small number of devices might roll back to the previous version of Windows 10 when attempting to update. If this occurs, you should attempt to update to Windows 10, version 2004 or Windows 10, version 20H2 again.

Please note, if there are no other safeguards that affect your device, it can take up to 48 hours before the update to a later version of Windows 10 is offered.

Errors or issues during or after updating devices with Conexant ISST audio drivers

StatusOriginating updateHistory
ResolvedN/A

Resolved: 2021-05-07, 13:12 PT
Opened: 2020-05-27, 00:22 PT
Synaptics and Microsoft have found incompatibility issues with certain versions of drivers for Conexant ISST audio driver and Windows 10, version 2004 (the Windows 10 May 2020 Update). Windows 10 devices with affected Conexant ISST audio driver might receive an error or experience issues while installing the update or after the device has updated. The affected driver will be named Conexant ISST Audio or Conexant HDAudio Driver under Sound, video and game controllers in Device Manager and have file name uci64a96.dll through uci64a231.dll and a file version of 7.231.3.0 or lower.

To safeguard your update experience, we have applied a compatibility hold on Windows 10 devices with affected Conexant or Synaptics audio drivers installed from being offered Windows 10, version 2004 or Windows Server, version 2004 until the driver has been updated. If your organization is using Update Compliance, the safeguard ID is 25178825.

Affected platforms:
  • Client: Windows 10, version 20H2, Windows 10, version 2004
  • Server: Windows Server, version 20H2, Windows Server, version 2004
Resolution: The safeguard hold with safeguard ID 25178825 has been removed for all devices as of May 7, 2021, including devices with affected drivers. If updated drivers are not available for your device and you are offered Windows 10, version 2004 or Windows 10, version 20H2, a small number of devices might roll back to the previous version of Windows 10 when attempting to update. If this occurs, you should attempt to update to Windows 10, version 2004 or Windows 10, version 20H2 again.

Please note, if there are no other safeguards that affect your device, it can take up to 48 hours before the update to a later version of Windows 10 is offered.