Windows 10 20H2-22H2 Preview Update KB5018482 (Oct. 25, 2022)

Windows[German]Microsoft has released an optional cumulative (preview) update KB5018482 on October 25, 2022 (C-Week). This is supposed to fix numerous bugs in Windows 10 21H2-21H2. The list of blocked drivers is finally rolled out via update. Below I provide an overview regarding these updates for Windows 10.


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The information about the updates can be found in the Windows 10 update history page. It should be noted that these updates are so-called preview or preview updates. These are optional and must be manually triggered for download and installation by default.

Windows 10 Preview Update KB5018482

Cumulative Preview Update KB5018482  is available for Windows 10 Enterprise version 20H2, Windows 10 Education, Windows 10 IoT Enterprise version 20H2 and Windows 10 version 21H1 to 21H2. It lifts the build to 1904x.2193. Here are the highlights of what has been fixed.

  • It addresses an issue that causes an OS upgrade to stop responding, and then it fails.
  • It addresses an issue that affects the font of three Chinese characters. When you format these characters as bold, the width size is wrong.
  • It addresses an issue that affects Microsoft Direct3D 9 games. The graphics hardware stops working if the hardware does not have a native Direct3D 9 driver.
  • It addresses graphical issues in games that use Microsoft D3D9 on some platforms.
  • It addresses an issue that affects Microsoft Edge when it is in IE Mode. The titles of pop-up windows and tabs are wrong.
  • It addresses an issue that affects the lasso tool in a graphics editing program.
  • It stops the start of daylight saving time in Jordan at the end of October 2022. The Jordan time zone will permanently shift to the UTC + 3 time zone.

Below is the list of new features and fixes that Microsoft specifies for the update (these will be included in the security update for the following month). Especially the update that updates the block list of vulnerable drivers in the Windows kernel (DriverSiPolicy.p7b file) should be mentioned here – I had confirmed the issue in the blog post Microsoft confirms: Windows fails to detect dangerous drivers – block lists not updated.

  • It addresses an issue that affects Distributed Component Object Model (DCOM) authentication hardening. It automatically raises the authentication level for all non-anonymous activation requests from DCOM clients to RPC_C_AUTHN_LEVEL_PKT_INTEGRITY. This occurs if the authentication level is below Packet Integrity.
  • It addresses a DCOM issue that affects the Remote Procedure Call Service (rpcss.exe). It raises the authentication level to RPC_C_AUTHN_LEVEL_PKT_INTEGRITY instead of RPC_C_AUTHN_LEVEL_CONNECT if RPC_C_AUTHN_LEVEL_NONE is specified.
  • It addresses an issue that causes an OS upgrade to stop responding, and then it fails.
  • It addresses an issue that affects the Microsoft Azure Active Directory (AAD) Application Proxy connector. It cannot retrieve a Kerberos ticket on behalf of the user. The error message is, "The handle specified is invalid (0x80090301)."
  • It addresses an issue that affects the font of three Chinese characters. When you format these characters as bold, the width size is wrong.
  • It addresses an issue that affects Microsoft Direct3D 9 games. The graphics hardware stops working if the hardware does not have a native Direct3D 9 driver.
  • It addresses graphical issues in games that use Microsoft D3D9 on some platforms.
  • It addresses an issue that affects Microsoft Edge when it is in IE Mode. The titles of pop-up windows and tabs are wrong.
  • It addresses an issue that affects Microsoft Edge IE mode. It stops you from opening webpages. This occurs when you enable Windows Defender Application Guard (WDAG) and you do not configure Network Isolation policies.
  • It addresses an issue that might cause an application to stop responding. This might occur when the input queue overflows.
  • It addresses an issue that affects input method editors (IME) from Microsoft and third parties. They stop working when you close the IME window. This occurs if the IME uses Windows Text Services Framework (TSF) 1.0.
  • It addresses an issue that affects the lasso tool in a graphics editing program.
  • It addresses an issue that affects Miracast advertisements. This issue occurs on Surface Hub devices under certain conditions.
  • It addresses an issue that affects some drivers. They use more power when you play hardware-protected digital rights management (DRM) content.
  • It addresses an issue that affects .msi files. Windows Defender Application Control (WDAC) will ignore them when you disable script enforcement.
  • It addresses an issue that affects a remote desktop virtual desktop infrastructure (VDI) scenario. The session might use the wrong time zone.
  • It updates the Windows kernel vulnerable driver blocklist that is in the DriverSiPolicy.p7b file. This update also ensures that the blocklist is the same across Windows 10 and Windows 11. For more information, see KB5020779.
  • It makes Microsoft compliant with US Government (USG) version 6 revision 1 (USGv6-r1).
  • It stops the start of daylight saving time in Jordan at the end of October 2022. The Jordan time zone will permanently shift to the UTC + 3 time zone.

The update is optional and is only offered when the user explicitly selects optional updates for installation in the settings page. The update can also be downloaded and installed from the Microsoft Update Catalog. The latest Servicing Stack Update (SSU) is integrated. Microsoft lists several known issues with this update in the support post. Further details, including the prerequisites for an installation, can be found in the support article in case of doubt.

Similar articles:
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Microsoft Security Update Summary (September 13, 2022)
Patchday: Windows 10-Updates (September 13, 2022)
Patchday: Windows 11/Server 2022-Updates (September 13, 2022)
Windows 7/Server 2008R2; Windows 8.1/Server 2012R2: Updates (September 13, 2022)
Patchday: Microsoft Office Updates (September 13, 2022)


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Windows 10 20H2-22H2 Preview Update KB5018482 (Oct. 25, 2022)
Windows 11 22H2: Preview-Update KB5018496 (Oct. 25, 2022)
Windows 11 21H2: Preview Update (Oct. 25, 2022)
Windows Server 2022 Preview Update KB5018485 (Oct. 25, 2022)


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