Windows 10: Windows 11 - installed update 22H2 KB5021255 and my 2x external monitors stopped being detected

Hi allI've been a Windows 10 user for a long time. I recently bought a new laptop, here's my setup now:Lenovo ThinkPad X1 Carbon, 12th Gen Intel i7Intel Iris Xe Graphics card came in the laptopLaptop arrived preinstalled with Windows 11Also a Lenovo Thunderbolt 4 docking station2x external monitors a Dell and an Asus, one connected by displayport, the other by HDMI, both running through the docking station along with keyboard/mouse/and a couple of other USB connected itemsThe monitors worked absolutely perfectly with Windows 11. They were auto-detected correctly and worked flawlessly.A f

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I get error code '0x800f081f' when installing windows 11 update '2022-12 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5021255)'

Hi,

See if the offline installer (.MSU package) helps.

2022-12 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5021255)

windows11.0-kb5021255-x64_2830fb558a628b0a1847a0025d3da14928f82a5e.msu

If that doesn't resolve the issue, please upload the zipped CBS and DISM logs to your OneDrive.

• CBS logs: c:\windows\logs\cbs\
  
• DISM log: c:\windows\logs\dism\
  

 

After installing windows 11 22H2 update get Stop Code RTKVHD64.

After installing windows 11 22H2 update get Stop Code RTKVHD64. I then have to revert back to windows 11 22H1. Any suggestions

Tony

 

After update today, external HDMI monitor has no sound and speaker no longer listed as audio device

My Windows 11 22H2 updated today with

2022-09 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5017389) and 2022-09 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 for x64 (KB5017271).

Now my external HDMI sound is gone.

From task tar, click sound icon, only see Lenovo laptop's built-in speaker listed (Realtek Audio).

Before I can see my HDMI monitor's speaker listed there.

Shutdown laptop and leave external monitor on does not help. Disconnect HDMI cable, power off/on monitor did not help either.

Audio of Device Manager does not list external HDMI monitor's speaker listed there neither.

I especially suspect KB5017271 caused the problem. Was updated KB5017389 first and it seemed was fine with external HDMI monitor speaker (but not 100% sure) which was updated first.