Microsoft has now listed the issues for which it has put a compatibility hold on devices to get Windows 10 20H2 update. Devices with these issues won’t be offered the Windows 10 20H2 update.
You can read all the changes and new features that Windows 10 Version 20H2 aka October 2020 update brings with itself by clicking here in our categorized changelog.
You can check the list of current issues impacting Windows 10 20H2 update availability below.
When installing incorrectly formatted third-party drivers, you might receive an error:
Resolved: 2020-10-20, 09:53 PT
Opened: 2020-10-13, 09:37 PT
When installing a third-party driver, you might receive the error, “Windows can’t verify the publisher of this driver software”. You may also see the error “No signature was present in the subject” when attempting to view the signature properties using Windows Explorer.This issue occurs when one or more of the following is present in a driver package:
an improperly formatted catalog file is identified during validation by Windows. Starting with this release, Windows will require the validity of DER encoded PKCS#7 content in catalog files. Catalogs files must be signed per section 11.6 of describing DER-encoding for SET OF members in X.690.
a driver catalog file extension is not one of the supported extensions.
Affected platforms:
Client: Windows 10, version 20H2, Windows 10, version 2004; Windows 10, version 1909; Windows 10, version 1903; Windows 10, version 1809; Windows 10 Enterprise LTSC 2019; Windows 10, version 1803; Windows 10, version 1709; Windows 10 Enterprise LTSC 2016; Windows 10, version 1607; Windows 10 Enterprise 2015 LTSB; Windows 8.1
Server: Windows Server, version 20H2, Windows Server, version 2004; Windows Server, version 1909; Windows Server, version 1903; Windows Server, version 1809; Windows Server 2019; Windows Server, version 1803; Windows Server, version 1709 ; Windows Server 2016; Windows Server 2012 R2
Next steps: If this happens you should contact the driver vendor or device manufacturer (OEM) and ask them for an updated driver to correct the issue.
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Issues when using Microsoft IME for Japanese or Chinese languages:
Last updated: 2020-10-20, 12:23 PT
Opened: 2020-08-31, 12:12 PT
Users of the Microsoft IME for Japanese or Chinese languages might experience issues when attempting various tasks. Input may have issues, you may receive unexpected results or you may be unable to enter text.Affected platforms:
Client: Windows 10, version 20H2, Windows 10, version 2004
Server: Windows Server, version 20H2, Windows Server, version 2004
Next steps: For more information on issues, workaround steps and currently resolved issues, please see KB4564002.
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Errors or issues during or after updating devices with certain Conexant audio drivers:
Last updated: 2020-10-20, 12:24 PT
Opened: 2020-05-27, 12:20 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
Next steps: Microsoft and Synaptics are working on a resolution and will provide an update in an upcoming release.Note We recommend that you do not attempt to manually update using the Update now button or the Media Creation Tool until this issue has been resolved.
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Errors or issues during or after updating devices with Conexant ISST audio drivers:
Last updated: 2020-10-20, 12:23 PT
Opened: 2020-05-27, 12:22 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 lower than 7.231.3.0.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
Workaround: To mitigate this issue, you will need to check with your device manufacturer (OEM) to see if an updated driver is available and install it.Next steps: Microsoft and Synaptics are working on a resolution and will provide an update in an upcoming release.
Note We recommend that you do not attempt to manually update using the Update now button or the Media Creation Tool until this issue has been resolved.
