Windows 10: KB4565503 installed then WSL 2 failed to start: "access denied"

FYI, I installed KB4565503 onto a Windows 10 Pro system running in a Hyper-V VM. After I installed it WSL 2 failed to start, saying "access denied". I uninstalled KB4565503 via "uninstall an update" and now WSL 2 starts fine. KB4566785 was installed at the same time - it is still installed.


I didn't keep good record of what I did today. If you can think of logs or other reports that might still be around on my machine that I could upload if you're interested let me know.

:)

 

MCHBAR read access failed

Hi everyone,


Trying to install TechPowerUp GPU-Z v0.3.8 but i keep getting...MCHBAR read access failed, any suggestions???

 

Resolving WslRegisterDistribution error 0x80370102 when installing Linux Distro for WSL 2?

# Encountering WslRegisterDistribution error 0x80370102 when installing Linux Distro for WSL 2

I am currently on the `Windows 10 Pro Insider Preview build 18922.rs_prerelease`, and am trying to install a Linux distribution to access via Windows Subsystem for Linux (2). I have tried this for both the Ubuntu and Debian distros and have encountered the
same error in each.

I have successfully downloaded both distros from the Microsoft store, but when I try to first "run" the Ubuntu or Debian "app" the respective console comes up and prints the following text:

Code:

Installing, this may take a few minutes...

WslRegisterDistribution failed with error: 0x80370102

Error: 0x80370102 The virtual machine could not be started because a required feature is not installed.

Press any key to continue...
Pressing a key at this point automatically exits the console.

---

## Additional information:

- Using the `wsl -l` command shows no installed distros.

- I do have Hypervisor installed and running `bcdedit` does show that `hypervisorlaunchtype` is set to `Auto` in the `Windows Boot Loader` section.

- I did previously have Ubuntu installed and working under WSL 1 before switching to the Windows Insider Program Fast Ring and gaining access to WSL 2, but I was encountering another issue when trying to have it use WSL 2. After
trying to use the command `wsl --set-version Ubuntu 2` I was met with a request to "Enable the Virtual Machine Platform". I had already run `Enable-WindowsOptionalFeature -Online -FeatureName VirtualMachinePlatform` prior, according to the official microsoft
tutorial here Install Windows Subsystem for Linux (WSL) on Windows 10, but for good measure I did it again and got the same error, and Ubuntu was still on version 1 (I haven't explicitly mentioned it but I was restarting/shutting down when requested/suggested
by windows and tutorials, so I don't believe me not restarting is a cause). In hopes to find a workaround, I ended up uninstalling Ubuntu and hoping I could reinstall it and have it obey the default defined by the `wsl --set-default-version 2` command (suffice
it to say, this did not go as I'd hoped).

- This might be an unrelated issue, but when I initially attempted reinstalling Ubuntu, the Microsoft store had a bit of a fit and could not complete the download- encountering an 'unknown error'. I did a restart, tried again, and
got the same error, but then after telling it to 'try again' it succeeded. I had no such issues installing Debian from the store.

---

## Suggestions Welcome

I've searched for a bit and can't find mention of this error code in particular anywhere else.

In addition, is there anywhere I can look up/access these error codes in any sort of documentation? Ideally so I can make a better informed work-around attempt before bothering you all on here.

All help is appreciated!

 

failed to enumerate objects in container, access is denied

I've gone through the steps that are supposed to allow me to delete a folder but when I get to this step:



The box at the top does not appear on my screen just the one at the bottom. Clicking the bottom box and continuing does not give me the permission I need to delete the folder. What else can I try? Thanks.