On October 20th, 2020, Microsoft released Windows 10, version 20H2 build 19042 to Visual Studio Subscribers and organizations with access to the Software Download Center and the Volume Licensing Service Center. This version is also known as Windows 10 ‘October 2020 Update’.
On this page you can view the critical issues, that have currently been identified, that might require avoidance or workaround to get Windows 10, version 20H2 installed and running.
When installing incorrectly formatted third-party drivers, you might receive an error
When installing a third-party driver, you might receive the following error:
Windows can’t verify the publisher of this driver software.
when attempting to view the signature properties using Windows Explorer, you may also see the error:
No signature was present in the subject
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 the 20H2 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.
If this happens you should contact the driver vendor or device manufacturer (OEM) and ask them for an updated driver to correct the issue.
Errors or issues during or after updating devices with certain Conexant audio drivers
Synaptics and Microsoft have found incompatibility issues with certain versions of drivers for Conexant or Synaptics audio devices and Windows 10. 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 and Windows 10, version 20H2.
To safeguard your update experience, Microsoft has applied a compatibility hold on Windows 10 devices with affected Conexant or Synaptics audio drivers installed from being offered Windows 10, version 2004 and Windows 10, version 20H2.
Issues when using Microsoft IME for Japanese or Chinese languages
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.
For more information on issues, workaround steps and currently resolved issues, please see KB4564002.
It also messes with smb/cifs/samba shares AGAIN
Unable to get iCloud integration with Office Outlook (19 Pro) working after upgrade to 19042. Have tried multiple loads and checks of Outlook add-ins being present. Every time I tick the box for Mail, Contacts, Calendars etc. the following appears:
"iCloud for Windows did not install properly. To repair it, you need to go to Apps and Features, select iCloud Outlook from the app list and click Modify. When prompted click on repair."
Doing this repair has no effect!